SULFUR DERIVATIVES AS CHEMOKINE RECEPTOR MODULATORS

Abstract

The present invention relates to novel sulfur derivatives, processes for preparing them, pharmaceutical compositions containing them and their use as pharmaceuticals as modulators of chemokine receptors.

Description

FIELD OF THE INVENTION

The present invention relates to novel sulfur derivatives, processes for preparing them, pharmaceutical compositions containing them and their use as pharmaceuticals as modulators of chemokine receptors. The invention relates specifically to the use of these compounds and their pharmaceutical compositions to treat disorders associated with chemokine receptor (CCR) modulation.

BACKGROUND OF THE INVENTION

Chemokines are a group of 7- to 14-kd peptides that play an important role in orchestrating leukocyte recruitment and migration during inflammation, and therefore represent an important target for anti-inflammatory therapies (Wells et al., 2006). They act by binding to seven-transmembrane, G protein-coupled receptors, the chemokine receptors. The chemokine system is complex, with about ˜50 chemokines and 20 chemokine receptors identified in humans, often acting with redundancy, making selection of specific antagonists difficult (Gerard and Rollins, 2001). Genetic knockout strategies have confirmed the importance of chemokines as regulators of immune function, but the deletion of specific chemokines has led to only specific and relatively mild defects in the inflammatory response further emphasizing the complex redundancy of the system. Selectivity is crucial for use of chemokine receptor antagonists in systemic diseases where a single chemokine-receptor system is implicated such as atheroscelorsis where the macrophage/monocyte system is the major player in order to allow a subtle and specific control over immune function (Weisberg et al., 2006; Feria and Diaz Gonzalez et al., 2006).

Many ocular conditions are characterized by inappropriate migration and infiltration of cells such as leukocytes and endothelial cells into the eye with deleterious effects to ocular structures (Wallace et al., 2004). Chemokines have been identified in such diseases and misregulation of the chemokine system is apparent in corneal graft rejection, diabetic retinopathy, age-related macular degeneration (ARMD), chronic inflammatory diseases such as uveitis, dry eye etc. Mice lacking CCR2 or MCP-1 develop features of ARMD with age, including drusen deposits, choroidal neovascularization and photoreceptor atrophy indicating a crucial role for this chemokine and its receptor signaling (Amabati et al., 2003). Thus CCR2 receptor-specific inhibitor might have potential therapeutic benefit in ocular diseases like ARMD. In contrast, various human and animal studies have identified several chemokines in different forms of uveitis, produced both by resident and infiltrating cells, that strongly suggests a prominent role for these molecules in its pathogenesis. Studies in rat and mice models of uveitis have demonstrated up-regulation of monocyte chemoattractant protein-1 (MCP-1), macrophage inflammatory protein-1 (MIP-1), RANTES, stromal derived factor-1 (SDF-1) which are powerful chemoattractants for monocytes and T-cells (Fang et al., 2004; Keino et al., 2003). Similar findings have been reported in peripheral blood mononuclear cells in patients with acute anterior uveitis (AAU), the most common form of human uveitis (Klitgaard et al., 2004). MCP-1 knockout mice and CCR5 knockout mice show reduced endotoxin-induced uveitis, which is the animal model for AAU (Takeuchi et al., 2005; Tuallion et al., 2002). It has also been demonstrated that blocking the chemokine system upstream with the use of NF-κB blockers significantly attenuates experimental AAU in rats (Yang et al., 2005). Blockage of NF-κB results in transcriptional inhibition of multiple chemokines. Given the complexity of pathogenesis in uveitis it is unlikely that a selective inhibition of a chemokine receptor in monotherapy will offer therapeutic benefit. A similar role of multiple chemokines have been shown to be correlated with clinical stage of disease in diabetic retinopathy and dry eye (Meleth et al., 2005; Yamagami et al., 2005). In these ocular diseases the use of broad spectrum chemokine receptor inhibitor which inhibits the function of a wide range of chemokines may be beneficial.

The first broad spectrum chemokine inhibitor (BSCI) to be reported was termed Peptide 3, which was derived from the sequence of human chemokine MCP-1 and was shown to block the migration of monocytes in response to MCP-1, MIP-1, RANTES and SDF-1 (Reckless and Grainger. 1999). A cyclic retro inverse analogue of Peptide 3, constructed of D-amino acids in the reverse sequence, called NR58-3.14.3 was observed to be a more potent chemokine inhibitor (Beech et al., 2001). NR58-3.14.3 has been used to test for anti-inflammatory activities in animal models of atherosclerosis, lung inflammation, irritable bowel syndrome etc (Beech et al., 2001; Grainger and Reckless. 2003; Tokuyama et al., 2005). However there are several disadvantages to using these BSCI as a long-term therapeutic strategy. The known BSCIs which are peptides which have relatively low potency, poor pharmacokinetics, and are unstable in vivo. In addition, systemic use of broad spectrum chemokine receptor inhibitors could potentially lead to deleterious side effects due to their systemic anti-inflammatory activity. However in ocular diseases, a local or topical application would prevent the broad spectrum inhibitor to be taken up systemically. Identification of a small molecule inhibitor of several chemokine receptors could be very useful for treatment of inflammatory ocular diseases. Given the evidence for the role of multiple chemokines in several ocular diseases and these results, we propose that the use of small and large molecule broad spectrum chemokine receptor inhibitors will have utility in the local treatment of ocular inflammatory diseases including, but not limited to, uveitis, dry eye, diabetic retinopathy, allergic eye disease and proliferative retinopathies. Manipulation of multiple chemokines therefore represents a novel therapeutic approach in treating ocular diseases.

• WO2008008374 discloses CCR2 inhibitors and methods of use thereof.
• WO03/099773 discloses CCR9 inhibitors and methods of use thereof.
• U.S. Pat. No. 7,622,583 discloses heteroaryl sulfonamides as antagonists of the CCR2 receptor.
• US 2008/0293720 discloses pyridinyl sulfonamide modulators of chemokine receptors.
• U.S. Pat. No. 7,393,873 discloses arylsulfonamide derivatives.

SUMMARY OF THE INVENTION

We have now discovered a group of novel sulphur derivatives which are potent and selective chemokine receptor modulators. As such, the compounds described herein are useful in treating a wide variety of disorders associated with modulation of chemokine receptors. The term “modulator” as used herein, includes but is not limited to: receptor agonist, antagonist, inverse agonist, inverse antagonist, partial agonist, partial antagonist.

This invention describes compounds of Formula I, which have chemokine receptor biological activity. The compounds in accordance with the present invention are thus of use in medicine, for example in the treatment of humans with diseases and conditions that are alleviated by CCR modulation.

In one aspect, the invention provides a compound having Formula I or a pharmaceutically acceptable salt thereof or stereoisomeric forms thereof, or the individual geometrical isomers, enantiomers, diastereoisomers, tautomers, zwitterions and pharmaceutically acceptable salts thereof:

wherein:

R¹ is H;

R² is substituted or unsubstituted C_1-6 alkyl, substituted or unsubstituted C_3-8 cycloalkyl or is substituted or unsubstituted C_3-8 cycloalkenyl;

R⁵ is —S—, —S(O)—, or —S(O)₂—;

R⁶ is 4-chloro-2-fluorophenyl;R¹⁷ is H, substituted or unsubstituted C_1-6 alkyl, halogen, substituted or unsubstituted —OC_1-6 alkyl, CN, C(O)R¹⁹, NR²⁰R²¹ or hydroxyl;R¹⁸ is H, substituted or unsubstituted C_1-6 alkyl, halogen, substituted or unsubstituted —OC_1-6 alkyl, CN, C(O)R²², NR²³R²⁴ or hydroxyl;R⁷ is H, halogen, CN, substituted or unsubstituted —OC_1-6 alkyl, substituted or unsubstituted C_1-6 alkyl or is substituted or unsubstituted C_3-8 cycloalkyl;R⁸ is H, substituted or unsubstituted C_1-6 alkyl, halogen, substituted or unsubstituted —OC_1-6 alkyl, CN or hydroxyl;R¹⁹ is H, OH or substituted or unsubstituted C_1-6 alkylR²⁰ is H or substituted or unsubstituted C_1-6 alkyl;R²¹ is H or substituted or unsubstituted C_1-6 alkyl;R²² is H, OH or substituted or unsubstituted C_1-6 alkylR²³ is H or substituted or unsubstituted C_1-6 alkyl; andR²⁴ is H or substituted or unsubstituted C_1-6 alkyl.

In another aspect, the invention provides a compound having Formula I wherein

R¹ is H;

R² is substituted or unsubstituted C_1-6 alkyl, substituted or unsubstituted C_3-8 cycloalkyl or substituted or unsubstituted C_3-8 cycloalkenyl;

R⁵ is S;

R⁶ is 4-chloro-2-fluorophenyl;R¹⁷ is H, substituted or unsubstituted C_1-6 alkyl, halogen, substituted or unsubstituted —OC_1-6 alkyl, CN, C(O)R¹⁹, NR²⁰R²¹ or hydroxyl;R¹⁸ is H, C_1-6 alkyl, halogen, substituted or unsubstituted —OC_1-6 alkyl, CN, C(O)R²², NR²³R²⁴ or hydroxyl;R⁷ is H, halogen, CN, substituted or unsubstituted —OC_1-6 alkyl, substituted or unsubstituted C_1-6 alkyl or substituted or unsubstituted C_3-8 cycloalkyl;R⁸ is H, substituted or unsubstituted C_1-6 alkyl, halogen, substituted or unsubstituted —OC_1-6 alkyl, CN or hydroxyl;R¹⁹ is H, OH or substituted or unsubstituted C_1-6 alkyl;R²⁰ is H or substituted or unsubstituted C_1-6 alkyl;R²¹ is H or substituted or unsubstituted C_1-6 alkyl;R²² is H, OH or substituted or unsubstituted C_1-6 alkyl;R²³ is H or substituted or unsubstituted C_1-6 alkyl; andR²⁴ is H or substituted or unsubstituted C_1-6 alkyl.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H;

R² is substituted or unsubstituted C_1-6 alkyl, substituted or unsubstituted C_3-8 cycloalkyl or substituted or unsubstituted C_3-8 cycloalkenyl;

R⁵ is —S(O)—;

R⁶ is 4-chloro-2-fluorophenyl;R¹⁷ is H, substituted or unsubstituted C_1-6 alkyl, halogen, substituted or unsubstituted —OC_1-6 alkyl, CN, C(O)R¹⁹, NR²⁰R²¹ or hydroxyl;R¹⁸ is H, substituted or unsubstituted C_1-6 alkyl, halogen, substituted or unsubstituted —OC_1-6 alkyl, CN, C(O)R²², NR²³R²⁴ or hydroxyl;R⁷ is H, halogen, CN, substituted or unsubstituted —OC_1-6 alkyl, substituted or unsubstituted C_1-6 alkyl or substituted or unsubstituted C_3-8 cycloalkyl;R⁸ is H, substituted or unsubstituted C_1-6 alkyl, halogen, substituted or unsubstituted —OC_1-6 alkyl, CN or hydroxyl;R¹⁹ is H, OH or substituted or unsubstituted C_1-6 alkyl;R²⁰ is H or substituted or unsubstituted C_1-6 alkyl;R²¹ is H or substituted or unsubstituted C_1-6 alkyl;R²² is H, OH or substituted or unsubstituted C_1-6 alkyl;R²³ is H or substituted or unsubstituted C_1-6 alkyl; andR²⁴ is H or substituted or unsubstituted C_1-6 alkyl.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H;

R² is substituted or unsubstituted C_1-6 alkyl, substituted or unsubstituted C_3-8 cycloalkyl or substituted or unsubstituted C_3-8 cycloalkenyl;

R⁵ is —S(O)₂—;

R⁶ is 4-chloro-2-fluorophenyl;R¹⁷ is H, substituted or unsubstituted C_1-6 alkyl, halogen, —OC_1-6 alkyl, CN, C(O)R¹⁹,NR²⁰R²¹ or hydroxyl;R¹⁸ is H, substituted or unsubstituted C_1-6 alkyl, halogen, substituted or unsubstituted —OC_1-6 alkyl, CN, C(O)R²², NR²³R²⁴ or hydroxyl;R⁷ is H, halogen, CN, substituted or unsubstituted —OC_1-6 alkyl, substituted or unsubstituted C_1-6 alkyl or substituted or unsubstituted C_3-8 cycloalkyl;R⁸ is H, substituted or unsubstituted C_1-6 alkyl, halogen, —OC_1-6 alkyl, CN or hydroxyl;R¹⁹ is H, OH or substituted or unsubstituted C_1-6 alkyl;R²⁰ is H or substituted or unsubstituted C_1-6 alkyl;R²¹ is H or substituted or unsubstituted C_1-6 alkyl;R²² is H, OH or substituted or unsubstituted C_1-6 alkyl;R²³ is H or substituted or unsubstituted C_1-6 alkyl; andR²⁴ is H or substituted or unsubstituted C_1-6 alkyl.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H;

R² is substituted or unsubstituted C_1-6 alkyl;

R⁵ is —S—, —S(O)—, or —S(O)₂—;

R⁶ is 4-chloro-2-fluorophenyl;R¹⁷ is H, substituted or unsubstituted C_1-6 alkyl or halogen;R¹⁸ is H, substituted or unsubstituted C_1-6 alkyl or halogen;R⁷ is H, halogen, CN, —OC_1-6 alkyl, substituted or unsubstituted C_1-6 alkyl or substituted or unsubstituted C_3-8 cycloalkyl; andR⁸ is H, substituted or unsubstituted C_1-6 alkyl, CN or halogen.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H

R² is substituted or unsubstituted C_1-6 alkyl;

R⁵ is —S—;

R⁶ is 4-chloro-2-fluorophenyl;R¹⁷ is H, substituted or unsubstituted C_1-6 alkyl or halogen;R¹⁸ is H, substituted or unsubstituted C_1-6 alkyl or halogen;R⁷ is H, halogen, CN, substituted or unsubstituted —OC_1-6 alkyl, substituted or unsubstituted C_1-6 alkyl or substituted or unsubstituted C_3-8 cycloalkyl; andR⁸ is H, substituted or unsubstituted C_1-6 alkyl, CN or halogen.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H;

R² is substituted or unsubstituted C_1-6 alkyl;

R⁵ is —S(O)—;

R⁶ is 4-chloro-2-fluorophenyl;R¹⁷ is H, substituted or unsubstituted C_1-6 alkyl or halogen;R¹⁸ is H, substituted or unsubstituted C_1-6 alkyl or halogen;R⁷ is H, halogen, CN, —OC_1-6 alkyl, substituted or unsubstituted C_1-6 alkyl or substituted or unsubstituted C_3-8 cycloalkyl;R⁸ is H, substituted or unsubstituted C_1-6 alkyl, CN or halogen.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H;

R² is substituted or unsubstituted C_1-16 alkyl;

R⁵ is —S(O)₂—;

R⁶ is 4-chloro-2-fluorophenyl;R¹⁷ is H, substituted or unsubstituted C_1-6 alkyl or halogen;R¹⁸ is H, substituted or unsubstituted C_1-6 alkyl or halogen;R⁷ is H, halogen, CN, substituted or unsubstituted —OC_1-6 alkyl, substituted or unsubstituted C_1-16 alkyl or substituted or unsubstituted C_3-8 cycloalkyl;R⁸ is H, substituted or unsubstituted C_1-6 alkyl, CN or halogen.

In another aspect, the invention provides a compound having Formula I wherein:

R^al is H;

R² is substituted or unsubstituted C_1-16 alkyl;

R⁵ is —S—, —S(O)—, or —S(O)₂—;

R⁶ is 4-chloro-2-fluorophenyl;

R¹⁷ is H;

R¹⁸ is H;

R⁷ is H, halogen, substituted or unsubstituted C_1-6 alkyl;

R⁸ is H or CN.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H;

R² is substituted C_1-6 alkyl with ester groups or amide groups or carboxylic acid groups;

R⁵ is —S—, —S(O)—, or —S(O)₂—;

R⁶ is 4-chloro-2-fluorophenyl;

R¹⁷ is H;

R¹⁸ is H;

R⁷ is H, halogen, substituted or unsubstituted C_1-6 alkyl;

R⁸ is H.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H;

R² is substituted C_1-6 alkyl with ester groups or amide groups or carboxylic acid groups;

R⁵ is —S—;

R⁶ is 4-chloro-2-fluorophenyl;

R¹⁷ is H;

R¹⁸ is H;

R⁷ is H, halogen, substituted or unsubstituted C_1-6 alkyl;

R⁸ is H.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H;

R² is substituted C_1-6 alkyl with ester groups or amide groups or carboxylic acid groups;

R⁵ is —S(O)—;

R⁶ is 4-chloro-2-fluorophenyl;

R¹⁷ is H;

R¹⁸ is H;

R⁷ is H, halogen, substituted or unsubstituted C_1-6 alkyl;

R⁸ is H.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H;

R² is substituted C_1-6 alkyl with ester groups or amide groups or carboxylic acid groups;

R⁵ is —S(O)₂—;

R⁶ is 4-chloro-2-fluorophenyl;

R¹⁷ is H;

R¹⁸ is H;

R⁷ is H, halogen, substituted or unsubstituted C_1-6 alkyl;

R⁸ is H.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H;

R² is C_1-6 alkyl;

R⁵ is —S;

R⁶ is 4-chloro-2-fluorophenyl;

R¹⁷ is H;

R¹⁸ is H;

R⁷ is H, halogen, or substituted or unsubstituted C_1-6 alkyl;

R⁸ is H.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H;

R² is substituted or unsubstituted C_1-16 alkyl;

R⁵ is —S(O);

R⁶ is 4-chloro-2-fluorophenyl;

R¹⁷ is H;

R¹⁸ is H;

R⁷ is H, halogen or C_1-6 alkyl;

R⁸ is H.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H;

R² is substituted or unsubstituted C_1-6 alkyl;

R⁵ is —S(O)₂—;

R⁶ is 4-chloro-2-fluorophenyl;

R¹⁷ is H;

R¹⁸ is H;

R⁷ is H, halogen or C_1-6 alkyl;

R⁸ is H.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H;

R² is substituted C_1-6 alkyl with ester groups or amide groups or carboxylic acid groups;

R⁵ is —S—, —S(O)—, or —S(O)₂—;

R⁶ is 4-chloro-2-fluorophenyl;

R¹⁷ is H;

R¹⁸ is H;

R⁷ is H, halogen, substituted or unsubstituted C_1-6 alkyl;

R⁸ is H.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H;

R² is substituted C_1-6 alkyl with ester groups or amide groups or carboxylic acid groups;

R⁵ is —S—;

R⁶ is 4-chloro-2-fluorophenyl;

R¹⁷ is H;

R¹⁸ is H;

R⁷ is H, halogen, substituted or unsubstituted C_1-6 alkyl;

R⁸ is H.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H;

R² is substituted C_1-6 alkyl with ester groups or amide groups or carboxylic acid groups;

R⁵ is —S(O)—;

R⁶ is 4-chloro-2-fluorophenyl;

R¹⁷ is H;

R¹⁸ is H;

R⁷ is H, halogen, substituted or unsubstituted C_1-6 alkyl;

R⁸ is H.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H;

R² is substituted C_1-6 alkyl with ester groups or amide groups or carboxylic acid groups;

R⁵ is —S(O)₂—;

R⁶ is 4-chloro-2-fluorophenyl;

R¹⁷ is H;

R¹⁸ is H;

R⁷ is H, halogen, substituted or unsubstituted C_1-6 alkyl;

R⁸ is H.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H;

R² is N,N-diethylpropanamide, methylpropanoate, propanoic acid or N-ethyl-N-methylpropanamide;

R⁵ is —S(O)₂—, —S— or —S(O)—;

R⁶ is 4-chloro-2-fluorophenyl;R⁷ is H, chlorine, methyl or fluorine;

R¹⁷ is H;

R¹⁸ is H; and

R⁸ is H.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H;

R² is N,N-diethylpropanamide, methylpropanoate, propanoic acid or N-ethyl-N-methylpropanamide;

R⁵ is —S(O)₂—;

R⁶ is 4-chloro-2-fluorophenyl;R⁷ is H, chlorine, methyl or fluorine;

R¹⁷ is H;

R¹⁸ is H; and

R⁸ is H.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H;

R² is N,N-diethylpropanamide, methylpropanoate, propanoic acid or N-ethyl-N-methylpropanamide;

R⁵ is —S—;

R⁶ is 4-chloro-2-fluorophenyl;R⁷ is H, chlorine, methyl or fluorine;

R¹⁷ is H;

R¹⁸ is H; and

R⁸ is H.

In another aspect, the invention provides a compound having Formula I wherein:

R¹ is H;

R² is N,N-diethylpropanamide, methylpropanoate, propanoic acid or N-ethyl-N-methylpropanamide;

R⁵ is —S(O)—;

R⁶ is 4-chloro-2-fluorophenyl;R⁷ is H, chlorine, methyl or fluorine;

R¹⁷ is H;

R¹⁸ is H; and

R⁸ is H.

The term “alkyl”, as used herein, refers to saturated, monovalent or divalent hydrocarbon moieties having linear or branched moieties or combinations thereof and containing 1 to 6 carbon atoms. One or more methylene (—CH₂—) groups, of the alkyl can be replaced by oxygen, sulfur, carbonyl, sulfoxide, nitrogen, sulfonyl, or by a divalent C_3-6 cycloalkyl. Hydrogen atoms on alkyl groups can be substituted by groups including, but not limited to: halogen, —OH, C_3-8 cycloalkyl, non-aromatic heterocycles, aromatic heterocycles, optionally substituted C_6-10 aryl, —O(C_1-6 alkyl), amine groups, amino groups, NO₂, amide groups, sulfonamide groups, ester groups, aldehyde groups, carboxylic acids, ketone groups.

The term “cycloalkyl”, as used herein, refers to a monovalent or divalent group of 3 to 8 carbon atoms, derived from a saturated cyclic hydrocarbon. Cycloalkyl groups can be monocyclic or polycyclic. Cycloalkyl can be substituted by groups including, but not limited to: halogen, —OH, C_3-8 cycloalkyl, non-aromatic heterocycles, aromatic heterocycles, C_6-10 aryl, —O(C_1-6 alkyl), amine groups, amino groups, NO₂, amide groups, carboxylic acids, sulfonamide groups, ester groups, aldehyde groups, ketone groups.

The term “cycloalkenyl”, as used herein, refers to a monovalent or divalent group of 3 to 8 carbon atoms, derived from a saturated cycloalkyl having one or more double bonds. Cycloalkenyl groups can be monocyclic or polycyclic. Cycloalkenyl groups can be substituted by groups including, but not limited to halogen, —OH, C_3-8 cycloalkyl, non-aromatic heterocycles, aromatic heterocycles, C_6-10 aryl, —O(C_1-6 alkyl), amine groups, amino groups, NO₂, amide groups, sulfonamide groups, carboxylic acids, ester groups, aldehyde groups, ketone groups.

The term “halogen”, as used herein, refers to an atom of chlorine, bromine, fluorine, iodine.

The term “alkenyl”, as used herein, refers to a monovalent or divalent hydrocarbon radical having 2 to 6 carbon atoms, derived from a saturated alkyl, having at least one double bond. C_2-6 alkenyl can be in the E or Z configuration. Alkenyl groups can be substituted by C_1-3 alkyl.

The term “alkynyl”, as used herein, refers to a monovalent or divalent hydrocarbon radical having 2 to 6 carbon atoms, derived from a saturated alkyl, having at least one triple bond.

The term “heterocycle” as used herein, refers to a 3 to 10 membered ring, which can be aromatic or non-aromatic, saturated or non-saturated, containing at least one heteroatom selected form O or N or S or combinations of at least two thereof, interrupting the carbocyclic ring structure. The heterocyclic ring can be interrupted by a C═O; the S heteroatom can be oxidized. Heterocycles can be monocyclic or polycyclic. Heterocyclic ring moieties can be substituted groups including, but not limited to: halogens, —OH, C_3-8 cycloalkyl, non-aromatic heterocycles, aromatic heterocycles, —OC_1-6 alkyl, —NH₂, —NO₂, amides, ethers, esters, ketones, carboxylic acids, aldehydes, sulfonamides groups.

Preferred substituted heterocycle groups are, but not limited to: pyridine, furan, azetidine, thiazol, thiophene, oxazol, pyrazol, isoxazole, 2-oxoindoline, 2-oxo-2,3-dihydro-1,3-benzoxazole, 2-oxo-2H-chromene, imidazole[2,1-b]thiazole, 1-H-pyrazole, indole, imidazole, quinoline, 2-thiophene, 2-benzofuran, 5-methyl-2-furan, 5-oxazolidine-2-one, pyrimidine-2,4(1H,3H)-dione, pyrimidine.

The term “aryl” as used herein, refers to an organic moiety derived from an aromatic hydrocarbon consisting of a ring containing 6 to 10 carbon atoms by removal of one hydrogen. Aryl can be substituted by groups including, but not limited to: halogens, —OH, C_3-8 cycloalkyl, non-aromatic heterocycles, aromatic heterocycles, —OC_1-6 alkyl, —NH₂, —NO₂, amides, ethers, esters, carboxylic acids, aldehydes, ketones, sulfonamides groups. Aryl can be monocyclic or bicyclic. Preferred substituted phenyl groups are, but not limited to: 4-chloro-3-trifluoromethyl-phenyl, 3,4-dichlorophenyl, 3-methoxyphenyl, 4-methyl-3-nitrophenyl, 4-chlorophenyl, 4-chloro-3-methylphenyl, nitro-3-trifluoromethylphenyl, 2,4-difluorophenyl, 4-chloro-2-fluorophenyl, 3-chloro-2-fluorophenyl, 4-isopropylphenyl, 4-bromophenyl, 4-iodophenyl, 3-chlorophenyl.

The term “amine” as used herein, represents a group of formula “—NR^xR^y”, wherein R^x and R^y can be the same or independently H, alkyl, aryl, cycloalkyl, cycloalkenyl, heterocycle as defined above.

The term “amide” as used herein, represents a group of formula “—C(O)N(R^x)(R^y)” or “NR^xC(O)R^y” wherein R^x and R^y can be the same or independently H, alkyl, aryl, cycloalkyl, cycloalkenyl, heterocycle as defined above.

The term “sulfonamide” as used herein, represents a group of formula “—S(O)₂NR^xR^y” or “NR^xR^yS(O)₂” or “—NR^xS(O)₂R^y” wherein R^x and R^y can be the same or independently H, alkyl, aryl, cycloalkyl, cycloalkenyl, heterocycle as defined above.

The term “ester” as used herein, represents a group of formula “—C(O)O(R^x)”, wherein R^x is alkyl, aryl, cycloalkyl, cycloalkenyl, heterocycle as defined above.

The term “aldehyde” as used herein, represents a group of formula “—C(O)H”.

The term “ketone” as used herein, represents a group of formula “—C(O)R^x” wherein R^x is C_1-6 alkyl.

The term “hydroxyl” as used herein, represents a group of formula “—OH”.

The term “amino” as used herein, represents a group of formula “—NH₂”.

The term “carbonyl” as used herein, represents a group of formula “—C(O)”.

The term “carboxyl” as used herein, represents a group of formula “—C(O)O—”.

The term “sulfonyl” as used herein, represents a group of formula “—SO₂”.

The term “sulfate” as used herein, represents a group of formula “—O—S(O)₂—O—”.

The term “carboxylic acid” as used herein, represents a group of formula “—C(O)OH”.

The term “sulfoxide” as used herein, represents a group of formula “—S═O”.

The term “phosphonic acid” as used herein, represents a group of formula “—P(O)(OH)₂”.

The term “phosphoric acid” as used herein, represents a group of formula “—(O)P(O)(OH)₂”.

The term “sulphonic acid” as used herein, represents a group of formula “—S(O)₂OH”.

The formula “H”, as used herein, represents a hydrogen atom.

The formula “O”, as used herein, represents an oxygen atom.

The formula “N”, as used herein, represents a nitrogen atom.

The formula “S”, as used herein, represents a sulfur atom.

Compounds of the invention are:

• methyl 3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl) sulfanyl]propanoate;
• 3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)sulfanyl]propanoic acid;
• methyl 3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl) sulfonyl]propanoate;
• methyl 3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl) sulfinyl]propanoate;
• 3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)sulfonyl]propanoic acid;
• 3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)sulfinyl]propanoic acid;
• 3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)sulfanyl]-N-ethyl-N-methylpropanamide;
• 3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)sulfinyl]-N-ethyl-N-methylpropanamide;
• 3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)sulfonyl]-N-ethyl-N-methylpropanamide.

Some compounds of Formula I and some of their intermediates have at least one stereogenic center in their structure. This stereogenic center may be present in an R or S configuration, said R and S notation is used in correspondence with the rules described in Pure Appli. Chem. (1976), 45, 11-13.

The term “pharmaceutically acceptable salts” refers to salts or complexes that retain the desired biological activity of the above identified compounds and exhibit minimal or no undesired toxicological effects. The “pharmaceutically acceptable salts” according to the invention include therapeutically active, non-toxic base or acid salt forms, which the compounds of Formula I are able to form.

The acid addition salt form of a compound of Formula I that occurs in its free form as a base can be obtained by treating the free base with an appropriate acid such as an inorganic acid, for example, a hydrohalic acid, such as hydrochloric acid, hydrobromic acid, sulfuric acid, phosphoric acid, nitric acid and the like; or an organic acid such as for example, acetic, hydroxyacetic, propanoic, lactic, pyruvic, malonic, fumaric acid, maleic acid, oxalic acid, tartaric acid, succinic acid, malic acid, ascorbic acid, benzoic acid, tannic acid, pamoic acid, citric, methylsulfonic, ethanesulfonic, benzenesulfonic, formic and the like (Handbook of Pharmaceutical Salts, P. Heinrich Stahal & Camille G. Wermuth (Eds), Verlag Helvetica Chemica Acta-Zürich, 2002, 329-345).

The base addition salt form of a compound of Formula I that occurs in its acid form can be obtained by treating the acid with an appropriate base such as an inorganic base, for example, sodium hydroxide, magnesium hydroxide, potassium hydroxide, Calcium hydroxide, ammonia and the like; or an organic base such as for example, L-Arginine, ethanolamine, betaine, benzathine, morpholine and the like. (Handbook of Pharmaceutical Salts, P. Heinrich Stahal & Camille G. Wermuth (Eds), Verlag Helvetica Chemica Acta-Zürich, 2002, 329-345).

Compounds of Formula I and their salts can be in the form of a solvate, which is included within the scope of the present invention. Such solvates include for example hydrates, alcoholates and the like.

With respect to the present invention reference to a compound or compounds, is intended to encompass that compound in each of its possible isomeric forms and mixtures thereof unless the particular isomeric form is referred to specifically.

Compounds according to the present invention may exist in different polymorphic forms. Although not explicitly indicated in the above formula, such forms are intended to be included within the scope of the present invention.

The compounds of the invention are indicated for use in treating or preventing conditions in which there is likely to be a component involving the chemokine receptors.

In another embodiment, there are provided pharmaceutical compositions including at least one compound of the invention in a pharmaceutically acceptable carrier.

In a further embodiment of the invention, there are provided methods for treating disorders associated with modulation of chemokine receptors. Such methods can be performed, for example, by administering to a subject in need thereof a pharmaceutical composition containing a therapeutically effective amount of at least one compound of the invention.

These compounds are useful for the treatment of mammals, including humans, with a range of conditions and diseases that are alleviated by CCR modulation. Therapeutic utilities of CCR modulators are skin inflammatory diseases and conditions, including, but are not limited to: rosacea (dilation of the blood vessels just under the skin), sunburn, chronic sun damage, discreet erythemas, psoriasis, atopic dermatitis, menopause-associated hot flashes, hot flashes resulting from orchiectomyatopic dermatitis, photoaging, seborrheic dermatitis, acne, allergic dermatitis, irritant dermatitis, telangiectasia (dilations of previously existing small blood vessels) of the face, rhinophyma (hypertrophy of the nose with follicular dilation), red bulbous nose, acne-like skin eruptions (may ooze or crust), burning or stinging sensation of the face, irritated and bloodshot and watery eyes, cutaneous hyperactivity with dilation of blood vessels of the skin, Lyell's syndrome, Stevens-Johnson syndrome, erythema multiforme minor, erythema multiforme major and other inflammatory skin diseases, actinic keratoses, arsenic keratoses, inflammatory and non-inflammatory acne, ichthyoses and other keratinization and hyperproliferative disorders of the skin, eczema, wound healing.

Therapeutic utilities of CCR modulators are ocular inflammatory diseases including, but not limited to, uveitis, retinal degenerative conditions, angiogenesis, dry eye, Keratitis, allergic eye disease and conditions affecting the posterior part of the eye, such as maculopathies and retinal degeneration including non-exudative age related macular degeneration, exudative age related macular degeneration, choroidal neovascularization, diabetic retinopathy, acute macular neuroretinopathy, central serous chorioretinopathy, cystoid macular edema, and diabetic macular edema; uveitis, retinitis, and choroiditis such as acute multifocal placoid pigment epitheliopathy, Behcet's disease, birdshot retinochoroidopathy, infectious (syphilis, lyme, tuberculosis, toxoplasmosis), intermediate uveitis (pars planitis), multifocal choroiditis, multiple evanescent white dot syndrome (mewds), ocular sarcoidosis, posterior scleritis, serpiginous choroiditis, subretinal fibrosis and uveitis syndrome, Vogt-Koyanagi- and Harada syndrome; vasuclar diseases/exudative diseases such as retinal arterial occlusive disease, central retinal vein occlusion, disseminated intravascular coagulopathy, branch retinal vein occlusion, hypertensive fundus changes, ocular ischemic syndrome, retinal arterial microaneurysms, Coat's disease, parafoveal telangiectasis, hemi-retinal vein occlusion, papillophlebitis, central retinal artery occlusion, branch retinal artery occlusion, carotid artery disease (CAD), frosted branch angiitis, sickle cell retinopathy and other hemoglobinopathies, angioid streaks, familial exudative vitreoretinopathy, and Eales disease; traumatic/surgical conditions such as sympathetic ophthalmia, uveitic retinal disease, retinal detachment, trauma, conditions caused by laser, conditions caused by photodynamic therapy, photocoagulation, hypoperfusion during surgery, radiation retinopathy, and bone marrow transplant retinopathy; proliferative disorders such as proliferative vitreal retinopathy and epiretinal membranes, and proliferative diabetic retinopathy; infectious disorders such as ocular histoplasmosis, ocular toxocariasis, presumed ocular histoplasmosis syndrome (PONS), endophthalmitis, toxoplasmosis, retinal diseases associated with HIV infection, choroidal disease associate with HIV infection, uveitic disease associate with HIV infection, viral retinitis, acute retinal necrosis, progressive outer retinal necrosis, fungal retinal diseases, ocular syphilis, ocular tuberculosis, diffuse unilateral subacute neuroretinitis, and myiasis; genetic disorders such as retinitis pigmentosa, systemic disorders with associated retinal dystrophies, congenital stationary night blindness, cone dystrophies, Stargardt's disease and fundus flavimaculatus, Best's disease, pattern dystrophy of the retinal pigmented epithelium, X-linked retinoschisis, Sorsby's fundus dystrophy, benign concentric maculopathy, Bietti's crystalline dystrophy, and pseudoxanthoma elasticum; retinal tears/holes such as retinal detachment, macular hole, and giant retinal tear; tumors such as retinal disease associated with tumors, congenital hypertrophy of the retinal pigmented epithelium, posterior uveal melanoma, choroidal hemangioma, choroidal osteoma, choroidal metastasis, combined hamartoma of the retina and retinal pigmented epithelium, retinoblastoma, vasoproliferative tumors of the ocular fundus, retinal astrocytoma, and intraocular lymphoid tumors; and miscellaneous other diseases affecting the posterior part of the eye such as punctate inner choroidopathy, acute posterior multifocal placoid pigment epitheliopathy, myopic retinal degeneration, and acute retinal pigement epitheliitis.

In still another embodiment of the invention, there are provided methods for treating disorders associated with modulation of chemokine receptors. Such methods can be performed, for example, by administering to a subject in need thereof a therapeutically effective amount of at least one compound of the invention, or any combination thereof, or pharmaceutically acceptable salts, hydrates, solvates, crystal forms and individual isomers, enantiomers, and diastereomers thereof.

The present invention concerns the use of a compound of Formula I or a pharmaceutically acceptable salt thereof, for the manufacture of a medicament for the treatment of ocular inflammatory diseases including, but not limited to, uveitis, dry eye, Keratitis, allergic eye disease and conditions affecting the posterior part of the eye, such as maculopathies and retinal degeneration including non-exudative age related macular degeneration, exudative age related macular degeneration, choroidal neovascularization, diabetic retinopathy, acute macular neuroretinopathy, central serous chorioretinopathy, cystoid macular edema, and diabetic macular edema; uveitis, retinitis, and choroiditis such as acute multifocal placoid pigment epitheliopathy, Behcet's disease, birdshot retinochoroidopathy, infectious (syphilis, lyme, tuberculosis, toxoplasmosis), intermediate uveitis (pars planitis), multifocal choroiditis, multiple evanescent white dot syndrome (mewds), ocular sarcoidosis, posterior scleritis, serpiginous choroiditis, subretinal fibrosis and uveitis syndrome, Vogt-Koyanagi- and Harada syndrome; vasuclar diseases/exudative diseases such as retinal arterial occlusive disease, central retinal vein occlusion, disseminated intravascular coagulopathy, branch retinal vein occlusion, hypertensive fundus changes, ocular ischemic syndrome, retinal arterial microaneurysms, Coat's disease, parafoveal telangiectasis, hemi-retinal vein occlusion, papillophlebitis, central retinal artery occlusion, branch retinal artery occlusion, carotid artery disease (CAD), frosted branch angiitis, sickle cell retinopathy and other hemoglobinopathies, angioid streaks, familial exudative vitreoretinopathy, and Eales disease; traumatic/surgical conditions such as sympathetic ophthalmia, uveitic retinal disease, retinal detachment, trauma, conditions caused by laser, conditions caused by photodynamic therapy, photocoagulation, hypoperfusion during surgery, radiation retinopathy, and bone marrow transplant retinopathy; proliferative disorders such as proliferative vitreal retinopathy and epiretinal membranes, and proliferative diabetic retinopathy; infectious disorders such as ocular histoplasmosis, ocular toxocariasis, presumed ocular histoplasmosis syndrome (PONS), endophthalmitis, toxoplasmosis, retinal diseases associated with HIV infection, choroidal disease associate with HIV infection, uveitic disease associate with HIV infection, viral retinitis, acute retinal necrosis, progressive outer retinal necrosis, fungal retinal diseases, ocular syphilis, ocular tuberculosis, diffuse unilateral subacute neuroretinitis, and myiasis; genetic disorders such as retinitis pigmentosa, systemic disorders with associated retinal dystrophies, congenital stationary night blindness, cone dystrophies, Stargardt's disease and fundus flavimaculatus, Best's disease, pattern dystrophy of the retinal pigmented epithelium, X-linked retinoschisis, Sorsby's fundus dystrophy, benign concentric maculopathy, Bietti's crystalline dystrophy, and pseudoxanthoma elasticum; retinal tears/holes such as retinal detachment, macular hole, and giant retinal tear; tumors such as retinal disease associated with tumors, congenital hypertrophy of the retinal pigmented epithelium, posterior uveal melanoma, choroidal hemangioma, choroidal osteoma, choroidal metastasis, combined hamartoma of the retina and retinal pigmented epithelium, retinoblastoma, vasoproliferative tumors of the ocular fundus, retinal astrocytoma, and intraocular lymphoid tumors; and miscellaneous other diseases affecting the posterior part of the eye such as punctate inner choroidopathy, acute posterior multifocal placoid pigment epitheliopathy, myopic retinal degeneration, and acute retinal pigement epitheliitis.

The actual amount of the compound to be administered in any given case will be determined by a physician taking into account the relevant circumstances, such as the severity of the condition, the age and weight of the patient, the patient's general physical condition, the cause of the condition, and the route of administration.

The patient will be administered the compound orally in any acceptable form, such as a tablet, liquid, capsule, powder and the like, or other routes may be desirable or necessary, particularly if the patient suffers from nausea. Such other routes may include, without exception, transdermal, parenteral, subcutaneous, intranasal, via an implant stent, intrathecal, intravitreal, topical to the eye, back to the eye, intramuscular, intravenous, and intrarectal modes of delivery. Additionally, the formulations may be designed to delay release of the active compound over a given period of time, or to carefully control the amount of drug released at a given time during the course of therapy.

In another embodiment of the invention, there are provided pharmaceutical compositions including at least one compound of the invention in a pharmaceutically acceptable carrier thereof. The phrase “pharmaceutically acceptable” means the carrier, diluent or excipient must be compatible with the other ingredients of the formulation and not deleterious to the recipient thereof.

Pharmaceutical compositions of the present invention can be used in the form of a solid, a solution, an emulsion, a dispersion, a patch, a micelle, a liposome, and the like, wherein the resulting composition contains one or more compounds of the present invention, as an active ingredient, in admixture with an organic or inorganic carrier or excipient suitable for enteral or parenteral applications. Invention compounds may be combined, for example, with the usual non-toxic, pharmaceutically acceptable carriers for tablets, pellets, capsules, suppositories, solutions, emulsions, suspensions, and any other form suitable for use. The carriers which can be used include glucose, lactose, gum acacia, gelatin, mannitol, starch paste, magnesium trisilicate, talc, corn starch, keratin, colloidal silica, potato starch, urea, medium chain length triglycerides, dextrans, and other carriers suitable for use in manufacturing preparations, in solid, semisolid, or liquid form. In addition auxiliary, stabilizing, thickening and coloring agents and perfumes may be used. Invention compounds are included in the pharmaceutical composition in an amount sufficient to produce the desired effect upon the process or disease condition.

Pharmaceutical compositions containing invention compounds may be in a form suitable for oral use, for example, as tablets, troches, lozenges, aqueous or oily suspensions, dispersible powders or granules, emulsions, hard or soft capsules, or syrups or elixirs. Compositions intended for oral use may be prepared according to any method known in the art for the manufacture of pharmaceutical compositions and such compositions may contain one or more agents selected from the group consisting of a sweetening agent such as sucrose, lactose, or saccharin, flavoring agents such as peppermint, oil of wintergreen or cherry, coloring agents and preserving agents in order to provide pharmaceutically elegant and palatable preparations. Tablets containing invention compounds in admixture with non-toxic pharmaceutically acceptable excipients may also be manufactured by known methods. The excipients used may be, for example, (1) inert diluents such as calcium carbonate, lactose, calcium phosphate or sodium phosphate; (2) granulating and disintegrating agents such as corn starch, potato starch or alginic acid; (3) binding agents such as gum tragacanth, corn starch, gelatin or acacia, and (4) lubricating agents such as magnesium stearate, stearic acid or talc. The tablets may be uncoated or they may be coated by known techniques to delay disintegration and absorption in the gastrointestinal tract and thereby provide a sustained action over a longer period. For example, a time delay material such as glyceryl monostearate or glyceryl distearate may be employed.

In some cases, formulations for oral use may be in the form of hard gelatin capsules wherein the invention compounds are mixed with an inert solid diluent, for example, calcium carbonate, calcium phosphate or kaolin. They may also be in the form of soft gelatin capsules wherein the invention compounds are mixed with water or an oil medium, for example, peanut oil, liquid paraffin or olive oil.

The pharmaceutical compositions may be in the form of a sterile injectable suspension. This suspension may be formulated according to known methods using suitable dispersing or wetting agents and suspending agents. The sterile injectable preparation may also be a sterile injectable solution or suspension in a non-toxic parenterally-acceptable diluent or solvent, for example, as a solution in 1,3-butanediol. Sterile, fixed oils are conventionally employed as a solvent or suspending medium. For this purpose any bland fixed oil may be employed including synthetic mono- or diglycerides, fatty acids (including oleic acid), naturally occurring vegetable oils like sesame oil, coconut oil, peanut oil, cottonseed oil, etc., or synthetic fatty vehicles like ethyl oleate or the like. Buffers, preservatives, antioxidants, and the like can be incorporated as required.

Invention compounds and their pharmaceutically-acceptable salts may be administered through different routes, including but not limited to topical eye drops, direct injection, application at the back of the eye or formulations that may further enhance the long duration of actions such as a slow releasing pellet, suspension, gel, or sustained delivery devices such as any suitable drug delivery system (DDS) known in the art. While topical administration is preferred, this compound may also be used in an intraocular implant as described in U.S. U.S. Pat. No. 7,931,909.

Invention compounds may also be administered in the form of suppositories for rectal administration of the drug. These compositions may be prepared by mixing the invention compounds with a suitable non-irritating excipient, such as cocoa butter, synthetic glyceride esters of polyethylene glycols, which are solid at ordinary temperatures, but liquefy and/or dissolve in the rectal cavity to release the drug.

Since individual subjects may present a wide variation in severity of symptoms and each drug has its unique therapeutic characteristics, the precise mode of administration and dosage employed for each subject is left to the discretion of the practitioner.

The compounds and pharmaceutical compositions described herein are useful as medicaments in mammals, including humans, for treatment of diseases and/or alleviations of conditions which are responsive to treatment by agonists or functional antagonists of chemokine receptors. Thus, in further embodiments of the invention, there are provided methods for treating a disorder associated with modulation of chemokine receptors. Such methods can be performed, for example, by administering to a subject in need thereof a pharmaceutical composition containing a therapeutically effective amount of at least one invention compound. As used herein, the term “therapeutically effective amount” means the amount of the pharmaceutical composition that will elicit the biological or medical response of a subject in need thereof that is being sought by the researcher, veterinarian, medical doctor or other clinician. In some embodiments, the subject in need thereof is a mammal. In some embodiments, the mammal is human.

The present invention concerns also processes for preparing the compounds of Formula I. The compounds of formula I according to the invention can be prepared analogously to conventional methods as understood by the person skilled in the art of synthetic organic chemistry. The synthetic schemes set forth below, illustrate how compounds according to the invention can be made. Those skilled in the art will be able to routinely modify and/or adapt Scheme 1 to synthesize any compounds of the invention covered by Formula I.

The described sulfur derivatives were prepared by general routes as shown in Scheme 1. In one route, an appropriately substituted 2-amino-benzenethiol such as Intermediate A can react with an electrophile such as a halide, tosylate, mesylate, enone, 2-enoate etc. in the presence of an acid or base to prepare sulfide Intermediate B. Alternatively, sulfide Intermediate B can be prepared by treatment of Intermediate A with an alcohol under Mitsunobu conditions. Reaction of Intermediate B with a sulfonyl chloride provides the sulfonamide of Formula I wherein R⁵ is S. Further, upon treatment with an oxidant such as meta-chloroperoxybenzoic acid, the compound of Formula I wherein R⁵ is S affords the compound wherein R⁵ is S(O) or R⁵ is S(O)₂.

In another route, di-sulfide Intermediate E type can be obtained through oxidation of an Intermediate A type. Reaction of Intermediate E with a, sulfonyl chloride provides sulfonamide Intermediate F. In situ or stepwise reduction of Intermediate F using polymer bound triphenylphosphine or sodium borohydride, respectively, followed by reaction of the resulting benzenethiol with an electrophile affords the sulfonamide of Formula I wherein R⁵ is S.

DETAILED DESCRIPTION OF THE INVENTION

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention claimed. As used herein, the use of the singular includes the plural unless specifically stated otherwise.

It will be readily apparent to those skilled in the art that some of the compounds of the invention may contain one or more asymmetric centers, such that the compounds may exist in enantiomeric as well as in diastereomeric forms. Unless it is specifically noted otherwise, the scope of the present invention includes all enantiomers, diastereomers and racemic mixtures. Some of the compounds of the invention may form salts with pharmaceutically acceptable acids or bases, and such pharmaceutically acceptable salts of the compounds described herein are also within the scope of the invention.

The present invention includes all pharmaceutically acceptable isotopically enriched compounds. Any compound of the invention may contain one or more isotopic atoms enriched or different than the natural ratio such as deuterium ²H (or D) in place of protium ¹H (or H) or use of ¹³C enriched material in place of ¹²C and the like. Similar substitutions can be employed for N, O and S. The use of isotopes may assist in analytical as well as therapeutic aspects of the invention. For example, use of deuterium may increase the in vivo half-life by altering the metabolism (rate) of the compounds of the invention. These compounds can be prepared in accord with the preparations described by use of isotopically enriched reagents.

As will be evident to those skilled in the art, individual isomeric forms can be obtained by separation of mixtures thereof in conventional manner. For example, in the case of diasteroisomeric isomers, chromatographic separation may be employed.

Compound names were generated with ACD version 8 and some intermediates' and reagents' names used in the examples were generated with software such as Chem Bio Draw Ultra version 12.0 or Auto Nom 2000 from MDL ISIS Draw 2.5 SP1. In general, characterization of the compounds is performed according to the following methods:

NMR spectra are recorded on Varian 600 or Varian 300, in the indicated solvent at ambient temperature; chemical shifts in [ppm], coupling constants in [Hz].

All the reagents, solvents, catalysts for which the synthesis is not described are purchased from chemical vendors such as Sigma Aldrich, Fluka, Bio-Blocks, Combi-blocks, TCI, VWR, Lancaster, Oakwood, Trans World Chemical, Alfa, Fisher, Maybridge, Frontier, Matrix, Ukrorgsynth, Toronto, Ryan Scientific, SiliCycle, Anaspec, Syn Chem, Chem-Impex, MIC-scientific, Ltd; however some known intermediates, were prepared according to published procedures. Solvents were purchased from commercial sources in appropriate quality and used as received. Air and/or moisture-sensitive reactions were run under an Ar— or N₂— atmosphere.

Usually the compounds of the invention were purified by chromatography:

CombiFlash Companion and RediSep Rf silica gel 60 (0.04-0.063 mm); Preparative thin layer chromatography (PTLC): Analtech (silica gel 60 F₂₅₄, 500 or 1000 μm).

The following abbreviations are used in the examples:

• NH₃ ammonia
• CH₃CN acetonitrile
• CH₂Cl₂ dichloromethane
• DMF N,N-dimethylformamide
• NaOH sodium hydroxide
• MeOH methanol
• CD₃OD deuterated methanol
• HCl hydrochloric acid
• Na₂SO₄ sodium sulfate
• HBTU 2-(1H-Benzotriazole-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate)
• DIPEA N,N-Diisopropylethylamine
• CuI copper iodide
• Cs₂CO₃ cesium carbonate
• DMEDA N,N′-dimethylethylenediamine
• MgSO₄ magnesium sulfate
• EtOAc ethyl acetate
• CDCl₃ deuterated chloroform
• DMSO-d₆ deuterated dimethyl sulfoxide
• TFA trifluoroacetic acid
• THF tetrahydrofuran
• K₂CO₃ potassium carbonate mCPBA meta-Chloroperoxybenzoic acid
• NaBH₄ sodium borohydride
• CaCl₂ calcium chloride

The following examples are for illustrative purposes only and are not intended, nor should they be construed as limiting the invention in any manner. Those skilled in the art will appreciate that variations and modifications of the following examples can be made without exceeding the spirit or scope of the invention.

SPECIFIC EXAMPLES

General Procedure A

Intermediate 1

5-chloro-2-[(1H-imidazol-4-ylmethyl)thio]aniline

A mixture of 2-amino-4-chlorobenzenethiol (CAS 1004-00-8) (1.1 g, 7.1 mmol), 4-(chloromethyl)-1H-imidazole hydrochloride (721 mg, 4.71 mmol) and K₂CO₃ (3.2 g, 23.6 mmol) in DMF (10 ml) was stirred at room temperature over night. The reaction mixture was poured into water (50 ml) and extracted with ethyl acetate (2×50 ml). The organic layer was washed with brine, dried over Na₂SO₄, concentrated in vacuo. The crude product was purified by column chromatography on silica gel (0→100% ethyl acetate in hexane) to give Intermediate 1 as a solid (1.0 g, 60%).

¹H NMR (300 MHz, CD₃OD) δ 7.58 (s, 1H), 7.06 (d, J=8.20 Hz, 1H), 6.73 (d, J=2.34 Hz, 1H), 6.65 (s, 1H), 6.48 (dd, J=2.34, 8.20 Hz, 1H), 3.86 (s, 2H).

General Procedure B

Compound 1

N-{5-chloro-2-[(1H-imidazol-4-ylmethyl)thio]phenyl}-1-benzofuran-2-sulfonamide

A mixture of Intermediate 1 (300 mg, 1.26 mmol) and 1-benzofuran-2-sulfonyl chloride (273 mg, 1.26 mmol) in pyridine (4 ml) was heated at 100° C. overnight. Pyridine was removed under reduced pressure and the residue was purified by column chromatography on silica gel (10% MeOH in CH₂Cl₂) to give Compound 1 (157 mg, 30%).

¹H NMR (600 MHz, acetone-d₆) δ 7.94 (s, 1H), 7.73 (d, J=7.92 Hz, 1H), 7.64 (d, J=2.35 Hz, 1H), 7.56 (d, J=8.51 Hz, 1H), 7.52 (d, J=8.22 Hz, 1H), 7.44-7.49 (m, 1H), 7.42 (s, 1H), 7.28-7.37 (m, 1H), 7.11 (dd, J=2.35, 8.22 Hz, 1H), 6.97 (s, 1H), 3.91 (s, 2H).

Compound 2

N-[5-chloro-2-(methylthio)phenyl]-1-benzofuran-2-sulfonamide

Following General Procedure B, the title compound (243 mg, 60%) was prepared from 5-chloro-2-(methylthio)aniline (CAS 16423-54-4) (200 mg, 1.15 mmol) and 1-benzofuran-2-sulfonyl chloride (249 mg, 1.152 mmol).

¹H NMR (600 MHz, acetone-d₆) δ 7.75 (d, J=7.92 Hz, 1H), 7.60 (d, J=8.51 Hz, 1H), 7.48-7.54 (m, 2H), 7.47 (d, J=2.35 Hz, 1H), 7.29-7.38 (m, 2H), 7.22 (dd, J=2.35, 8.51 Hz, 1H), 2.22 (s, 3H).

General Procedure C

Compound 3

N-[5-chloro-2-(methylsulfinyl)phenyl]-1-benzofuran-2-sulfonamide

To a solution of Compound 2 (194 mg, 0.554 mmol) in CH₂Cl₂ (6 ml) at 0° C. was added mCPBA (111 mg, ˜0.554 mmol). After it was stirred for 30 min at 0° C., the mixture was separated into two portions. One portion (2 ml) was concentrated in vacuo and purified by column chromatography on silica gel (0→100% ethyl acetate in hexane followed by 0→10% MeOH in CH₂Cl₂) to give the title compound as a solid (35 mg, 52%).

Alternatively, the title compound can be prepared by treating Compound 2 with 1 equivalent of NalO₄ in MeOH/CH₃CN and H₂O at 0° C. to room temperature.

In another alternative procedure, the title compound can be prepared by treating Compound 2 with 1-1.4 equivalent of Oxone® in MeOH/CH₃CN and H₂O at room temperature.

¹H NMR (600 MHz, CDCl₃) δ 7.74 (d, J=1.76 Hz, 1H), 7.71 (d, J=8.22 Hz, 1H), 7.52-7.59 (m, 2H), 7.49 (td, J=1.17, 7.78 Hz, 1H), 7.32-7.39 (m, 1H), 7.25 (d, J=8.22 Hz, 1H), 7.15 (dd, J=1.91, 8.36 Hz, 1H), 2.88 (s, 3H).

General Procedure D

Compound 4

N-[5-chloro-2-(methylsulfonyl)phenyl]-1-benzofuran-2-sulfonamide

To the other portion (4 ml) of solution from Compound 3 was added mCPBA (111 mg, 0.554 mmol) and the reaction was stirred at room temperature for 1 h. The mixture was concentrated in vacuo and the residue was purified by column chromatography on silica gel (0→100% ethyl acetate in hexane) to give the title compound as a solid (75 mg, 53%).

Alternatively, the title compound can be prepared by treating Compound 2 with 2-3 equivalents of mCPBA at room temperature.

In another alternative procedure, the title compound can be prepared by treating Compound 2 with 3 equivalents of Oxone® in MeOH/CH₃CN and H₂O at room temperature.

¹H NMR (600 MHz, CDCl₃) δ 9.43 (s, 1H), 7.88 (d, J=1.76 Hz, 1H), 7.81 (d, J=8.51 Hz, 1H), 7.72 (d, J=7.92 Hz, 1H), 7.61 (s, 1H), 7.47-7.57 (m, 2H), 7.34-7.40 (m, 1H), 7.26 (s, 1H), 7.23 (dd, J=2.05, 8.51 Hz, 1H), 3.05 (s, 3H).

Intermediate 2

5-chloro-2-(methylsulfinyl)aniline

Following General Procedure C, the title compound (914 mg, 84%) was prepared from 5-chloro-2-(methylthio)aniline (1 g, 5.758 mmol).

¹H NMR (300 MHz, CD₃OD) δ 7.32 (d, J=8.20 Hz, 1H), 6.81 (d, J=2.05 Hz, 1H), 6.72 (dd, J=1.76, 8.20 Hz, 1H), 2.86 (s, 3H).

Compound 5

3,4-dichloro-N-[5-chloro-2-(methylthio)phenyl]benzenesulfonamide

Following General Procedure B, the title compound (52 mg, 21%) was prepared from 5-chloro-2-(methylsulfinyl)aniline (Intermediate 2) (120 mg, 0.635 mmol) and 3,4-dichlorobenzene-1-sulfonyl chloride (156 mg, 0.635 mmol).

¹H NMR (300 MHz, CD₃OD) δ 7.87 (d, J=1.76 Hz, 1H), 7.55-7.70 (m, 2H), 7.38 (s, 1H), 7.17-7.27 (m, 2H), 2.22 (s, 3H).

Compound 6

3,4-dichloro-N-[5-chloro-2-(methylsulfinyl)phenyl]benzenesulfonamide

Following General Procedure C, the title compound (28 mg, 52%) was prepared from 3,4-dichloro-N-[5-chloro-2-(methylthio)phenyl]benzenesulfonamide (52 mg, 0.136 mmol).

¹H NMR (300 MHz, acetone-d₆) δ 10.70 (br. s., 1H), 8.06 (s, 1H), 7.86 (s, 2H), 7.44-7.59 (m, 2H), 7.34 (dd, J=1.90, 8.35 Hz, 1H), 2.84 (s, 3H).

Compound 7

4-chloro-N-[5-chloro-2-(methylsulfinyl)phenyl]-3-methylbenzenesulfonamide

Following General Procedure B and C, the title compound (90 mg) was prepared from 5-chloro-2-(methylthio)aniline and 4-chloro-3-methylbenzene-1-sulfonyl chloride.

¹H NMR (600 MHz, CDCl₃) δ 10.62 (s, 1H), 7.82 (d, J=2.05 Hz, 1H), 7.71 (dd, J=1.91, 8.36 Hz, 1H), 7.63 (d, J=2.05 Hz, 1H), 7.48 (d, J=8.51 Hz, 1H), 7.02-7.15 (m, 2H), 2.81 (s, 3H), 2.43 (s, 3H).

Compound 8

N-[5-chloro-2-(methylsulfinyl)phenyl]-3-nitro-4-(trifluoromethyl)benzenesulfonamide

Following General Procedure B and C, the title compound (43 mg) was prepared from 5-chloro-2-(methylthio)aniline and 4-nitro-3-(trifluoromethyl)benzene-1-sulfonyl chloride.

¹H NMR (600 MHz, acetone-d₆) δ 8.25-8.35 (m, 2H), 8.11 (d, J=8.22 Hz, 1H), 7.39-7.48 (m, 2H), 6.75 (dd, J=2.05, 8.22 Hz, 1H), 2.70 (s, 3H).

Compound 9

4-chloro-N-[5-chloro-2-(methylthio)phenyl]-2-fluorobenzenesulfonamide

Following General Procedure B, the title compound (380 mg, 66%) was prepared from 5-chloro-2-(methylthio)aniline (273 mg, 1.57 mmol) and 4-chloro-2-fluorobenzene-1-sulfonyl chloride (360 mg, 1.57 mmol).

¹H NMR (300 MHz, acetone-d₆) δ 8.77 (br. s., 1H), 7.84 (t, J=8.06 Hz, 1H), 7.53 (dd, J=1.90, 9.82 Hz, 1H), 7.35-7.48 (m, 3H), 7.25 (dd, J=2.20, 8.35 Hz, 1H), 2.34 (s, 3H).

Compound 10

4-chloro-N-{5-chloro-2-[(1H-imidazol-4-ylmethyl)sulfonyl]phenyl}-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure B and D, the title compound (95 mg, 36%) was prepared from 5-chloro-2-[(1H-imidazol-4-ylmethyl)thio]aniline (301 mg, 1.26 mmol) and 4-chloro-3-(trifluoromethyl)benzene-1-sulfonyl chloride (351 mg, 1.26 mmol).

¹H NMR (600 MHz, acetone-d₆) δ 8.27 (s, 1H), 8.15 (d, J=8.22 Hz, 1H), 7.81 (br. s., 1H), 7.73 (d, J=8.51 Hz, 1H), 7.68 (d, J=8.51 Hz, 1H), 7.30 (s, 1H), 6.91 (dd, J=1.47, 8.51 Hz, 1H), 4.56 (br. s., 2H).

Intermediate 3

tert-butyl [4-(chloromethyl)-1,3-thiazol-2-yl]carbamate

A solution of 4-(chloromethyl)-1,3-thiazol-2-amine hydrochloride (530 mg, 2.86 mmol), di-tert-butyl dicarbonate (750 mg, 3.44 mmol), triethylamine (0.6 ml, 4.30 mmol) and DMAP (cat. amount) in THF (10 ml) was stirred at room temperature overnight. The mixture was diluted with ethyl acetate. washed with water and brine, dried over Na₂SO₄, and concentrated in vacuo. The residue was purified by column chromatography (30% ethyl acetate in hexane) to give the title compound as a solid (391 mg, 45%).

¹H NMR (600 MHz, CD₃OD) δ 7.02 (s, 1H), 4.56 (s, 2H), 1.54 (s, 9H).

Intermediate 4

tert-butyl (4-{[(2-amino-4-chlorophenyl)thio]methyl}-1,3-thiazol-2-yl)carbamate

Following General Procedure A, the title compound (588 mg, 67%) was prepared from 2-amino-4-chlorobenzenethiol (376 mg, 2.36 mmol), tert-butyl [4-(chloromethyl)-1,3-thiazol-2-yl]carbamate (391 mg, 1.57 mmol) and K₂CO₃ (1.08 g, 3.45 mmol) in DMF (10 ml).

¹H NMR (300 MHz, acetone-d₆) δ 10.18 (br. s., 1H), 7.17 (d, J=8.21 Hz, 1H), 6.79 (d, J=2.34 Hz, 1H), 6.62 (s, 1H), 6.51 (dd, J=2.05, 8.20 Hz, 1H), 5.30 (br. s., 1H), 3.88 (s, 2H), 1.53 (s, 9H).

Compound 11

tert-butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)methyl]-1,3-thiazol-2-yl}carbamate

Following General Procedure B, the title compound (380 mg, 54%) was prepared from tert-butyl (4-{[(2-amino-4-chlorophenyl)thio]methyl}-1,3-thiazol-2-yl)carbamate (640 mg, 1.72 mmol) and 1-benzofuran-2-sulfonyl chloride (372 mg, 1.72 mmol) in pyridine (5 ml).

¹H NMR (300 MHz, acetone-d₆) δ 11.20 (br. s., 1H), 9.82 (br. s., 1H), 7.78 (d, J=7.91 Hz, 2H), 7.67 (d, J=2.34 Hz, 1H), 7.62 (s, 1H), 7.45-7.60 (m, 3H), 7.31-7.43 (m, 1H), 7.07-7.22 (m, 1H), 6.77 (s, 1H), 3.93 (s, 2H), 1.55 (s, 9H).

General Procedure E

Compound 12

N-(2-{[(2-amino-1,3-thiazol-4-yl)methyl]thio}-5-chlorophenyl)-1-benzofuran-2-sulfonamide

A solution of tert-butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)methyl]-1,3-thiazol-2-yl}carbamate Compound 11 (62 mg, 0.11 mmol), TFA (0.2 ml) in CH₂Cl₂ (1 ml) was stirred overnight. The solvent was removed in vacuo and the crude product was purified by column chromatography on silica gel (50% ethyl acetate in hexane) to afford the title compound (45 mg, 88%).

¹H NMR (600 MHz, acetone-d₆) δ 8.78 (br. s., 1H), 7.77 (d, J=7.92 Hz, OH), 7.55-7.66 (m, 3H), 7.45-7.55 (m, 2H), 7.29-7.41 (m, 1H), 7.17 (dd, J=2.20, 8.36 Hz, 1H), 6.33 (s, 1H), 3.90 (s, 2H).

Compound 13

4-chloro-N-[5-chloro-2-(methylsulfinyl)phenyl]-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure B and C, the title compound was prepared from 5-chloro-2-(methylthio)aniline and 4-chloro-3-(trifluoromethyl)benzene-1-sulfonyl chloride.

¹H NMR (300 MHz, CD₃OD) δ 8.07 (s, 1H), 7.96 (d, J=8.50 Hz, 1H), 7.82 (d, J=8.21 Hz, 1H), 7.76 (d, J=8.50 Hz, 1H), 7.41 (d, J=7.91 Hz, 1H), 7.07 (s, 1H), 2.83 (s, 3H).

General Procedure F

Intermediate 5

N,N′-[dithiobis(5-chloro-2,1-phenylene)]bis[4-chloro-3-(trifluoromethyl)benzenesulfonamide]

To a solution of 2,2′-dithiobis(5-chloroaniline) (CAS 29124-55-8)(1.59 g, 5.0 mmol) in pyridine (20 ml) was added 4-chloro-3-(trifluoromethyl)benzene-1-sulfonyl chloride (2.76 g, 10.0 mmol) and the reaction was stirred at room temperature for 16 h. Additional 4-chloro-3-(trifluoromethyl)benzene-1-sulfonyl chloride (2.76 g, 10.0 mmol) and pyridine (20 ml) was added, and the reaction was stirred for 20 h. The mixture was concentrated in vacuo and H₂O was added. A gum-like semi-solid was formed. After decanting H₂O, the semi-solid was rinsed with H₂O (×2), taken in EtOAc, extracted with 1M HCl (×2), washed with H₂O, brine, dried over Na₂SO₄, and concentrated in vacuo to give a brown thick syrup (6.5 g). To a solution of the crude syrup in methanol (100 ml) was added 4M NaOH (12 ml), and the mixture was heated at 100° C. for 15 min, cooled to room temperature, quenched slowly with 1M HCl (˜50 ml) with stirring and cooling to pH 4-5. The volume of the resulting suspension was reduced in vacuo, followed by extraction with EtOAc. The organic layer was washed with brine, dried over Na₂SO₄, and concentrated in vacuo. The crude solid containing sulfonic acid was pulverized in saturated NaHCO₃, and filtered, rinsed with minimal amount of diethyl ether to yield the title compound as an off-white solid (3.11 g).

¹H NMR (600 MHz, CD₃OD) δ 8.08 (d, J=2.05 Hz, 2H), 7.93 (dd, J=2.20, 8.36 Hz, 2H), 7.81 (d, J=8.51 Hz, 2H), 7.22 (d, J=2.05 Hz, 2H), 7.18-7.20 (m, 2H), 7.10 (d, J=8.51 Hz, 2H).

Compound 14

4-chloro-N-[5-chloro-2-(ethylthio)phenyl]-3-(trifluoromethyl)benzenesulfonamide

To a solution of N,N′-[dithiobis(5-chloro-2,1-phenylene)]bis[4-chloro-3-(trifluoromethyl)benzenesulfonamide] Intermediate 5 (0.32 g, 0.40 mmol) in CH₂Cl₂ (10 ml) was added saturated aqueous NaHCO₃ (1.0 ml), polymer-bound triphenylphosphine (˜3 mmol/g triphenylphosphine loading, 0.27 g, 0.80 mmol), and ethyl iodide (64 μl, 0.80 mmol). The reaction was stirred at room temperature for 2 h and was diluted with EtOAc, filtered, and washed with brine, dried over Na₂SO₄, and concentrated. The residue was purified by column chromatography on silica gel (0→25% ethyl acetate in hexane) to yield the title compound as a yellow syrup (204 mg, 59%).

¹H NMR (600 MHz, CDCl₃) δ 8.12 (d, J=2.35 Hz, 1H), 7.88 (dd, J=2.35, 8.22 Hz, 1H), 7.82 (br. s., 1H), 7.64 (d, J=2.35 Hz, 1H), 7.59 (d, J=8.51 Hz, 1H), 7.32 (d, J=8.22 Hz, 1H), 7.06 (dd, J=2.20, 8.36 Hz, 1H), 2.60 (q, J=7.34 Hz, 2H), 1.10 (t, J=7.34 Hz, 3H).

Compound 15

4-chloro-N-[5-chloro-2-(ethylsulfinyl)phenyl]-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure C, the title compound was prepared from 4-chloro-N-[5-chloro-2-(ethylthio)phenyl]-3-(trifluoromethyl)benzenesulfonamide.

¹H NMR (600 MHz, CD₃OD) δ 8.15 (d, J=2.35 Hz, 1H), 8.00 (dd, J=2.20, 8.36 Hz, 1H), 7.72 (d, J=8.51 Hz, 1H), 7.44 (d, J=8.51 Hz, 1H), 7.27 (d, J=2.05 Hz, 1H), 7.01 (dd, J=2.05, 8.51 Hz, 1H), 3.10-3.18 (m, 1H), 2.89-2.97 (m, 1H), 1.11 (t, J=7.34 Hz, 3H).

Intermediate 6

ethyl 6-[(tert-butoxycarbonyl)amino]pyridine-2-carboxylate

A mixture of ethyl 6-aminopyridine-2-carboxylate (1.57 g, 9.43 mmol), DMAP (1.12 g, 9.18 mmol), and di-tert-butyl dicarbonate (2.46 g, 11.3 mmol) in THF (45 ml) was heated at 60° C. for 16 h. The solvent was removed and the residue was purified by chromatography on silica gel (10→15% ethyl acetate in hexane) to yield the title compound as a white solid (2.50 g, 100%).

Intermediate 7

tert-butyl [6-(chloromethyl)pyridin-2-yl]carbamate

To a solution of ethyl 6-[(tert-butoxycarbonyl)amino]pyridine-2-carboxylate (456 mg, 1.71 mmol) in anhydrous ethanol (20 ml) was added pulverized CaCl₂ (395 mg, 3.42 mmol). The suspension was stirred and cooled to 0° C. and NaBH₄ (325 mg, 8.55 mmol) was added slowly. The reaction was stirred at 0° C. for 2 h, quenched with water, and extracted with CHCl₃ (×3). The combined organic layer was dried over Na₂SO₄ and concentrated. The residue was purified by column chromatography on silica gel (30→50% ethyl acetate in hexane) to yield a colorless syrup (308 mg) as a mixture containing tert-butyl [6-(hydroxymethyl)pyridin-2-yl]carbamate as the major component (˜4:1 ratio). To a solution of the above mixture in CH₂Cl₂ (10 ml) was added pyridine (144 μl, 1.79 mmol) and SOCl₂ (120 μl, 1.65 mmol). The reaction was stirred at room temperature for 4 h, quenched with water and saturated Na₂CO₃, and extracted with CHCl₃. The combined organic layer was dried over Na₂SO₄ and concentrated. The residue was purified by column chromatography on silica gel (10% ethyl acetate in hexane) to yield the title compound as a colorless syrup (208 mg, 50% over 2 steps).

Intermediate 8

N,N′-[dithiobis(5-chloro-2,1-phenylene)]bis(1-benzofuran-2-sulfonamide)

Following General Procedure F, the title compound was prepared from 2,2′-dithiobis(5-chloroaniline) and 1-benzofuran-2-sulfonyl chloride.

¹H NMR (600 MHz, CD₃OD) δ 7.72 (d, J=7.92 Hz, 2H), 7.55 (dd, J=0.59, 8.51 Hz, 2H), 7.48 (s, 2H), 7.32-7.37 (m, 4H), 7.22 (d, J=2.05 Hz, 2H), 6.99-7.02 (m, 2H), 6.96-6.99 (m, 2H).

General Procedure G

Compound 16

tert-Tutyl {6-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)methyl]pyridin-2-yl}carbamate

To a solution of N,N′-[dithiobis(5-chloro-2,1-phenylene)]bis(1-benzofuran-2-sulfonamide) (271 mg, 0.40 mmol) in CH₂Cl₂ (4 ml) and dioxane (4 ml) was added saturated aqueous NaHCO₃ (4 ml), polymer-bound triphenylphosphine (˜3 mmol/g triphenylphosphine loading, 0.40 g, 1.20 mmol), tert-butyl [6-(chloromethyl)pyridin-2-yl]carbamate (195 mg, 0.80 mmol), and tetrabutylammonium iodide (30 mg, 0.08 mmol). The reaction was stirred at room temperature for 4 h and was diluted with EtOAc, filtered, and washed with brine, dried over Na₂SO₄, and concentrated. The residue was purified by column chromatography on silica gel (10→15% ethyl acetate in hexane) to yield the title compound as a yellow solid (260 mg, 59%).

¹H NMR (600 MHz, CD₃OD) δ 7.74 (d, J=8.22 Hz, 1H), 7.70 (d, J=7.63 Hz, 1H), 7.50-7.57 (m, 2H), 7.44-7.50 (m, 2H), 7.41 (s, 1H), 7.31-7.36 (m, 2H), 7.09 (d, J=8.22 Hz, 1H), 6.65 (d, J=7.34 Hz, 1H), 3.88 (s, 2H), 1.54 (s, 9H).

Compound 17

N-(2-{[(6-aminopyridin-2-yl)methyl]thio}-5-chlorophenyl)-1-benzofuran-2-sulfonamide

Following General Procedure E, the title compound (33 mg, 78%) was prepared from tert-butyl {6-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)methyl]pyridin-2-yl}carbamate.

¹H NMR (600 MHz, CD₃OD) δ 7.63 (d, J=7.92 Hz, 1H), 7.58 (d, J=2.35 Hz, 1H), 7.40-7.44 (m, 1H), 7.35-7.40 (m, 2H), 7.31-7.35 (m, 2H), 7.26 (ddd, J=0.88, 7.04, 7.92 Hz, 1H), 6.95 (dd, J=2.35, 8.22 Hz, 1H), 6.55 (d, J=8.51 Hz, 1H), 6.31 (d, J=7.04 Hz, 1H), 3.78 (s, 2H).

Compound 18

tert-butyl {6-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}sulfinyl)methyl]pyridin-2-yl}carbamate

Following General Procedure C, the title compound (98 mg, 91%) was prepared from tert-butyl {6-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)methyl]pyridin-2-yl}carbamate.

¹H NMR (600 MHz, CD₃OD) δ 7.67 (d, J=8.22 Hz, 1H), 7.64 (d, J=7.04 Hz, 1H), 7.47 (d, J=2.05 Hz, 1H), 7.42-7.46 (m, 1H), 7.36-7.39 (m, 1H), 7.29-7.33 (m, 1H), 7.22-7.26 (m, 2H), 7.09 (d, J=8.22 Hz, 1H), 6.77 (dd, J=1.91, 8.36 Hz, 1H), 6.68 (d, J=7.34 Hz, 1H), 4.59 (d, J=12.62 Hz, 1H), 4.16 (d, J=12.62 Hz, 1H), 1.52 (s, 9H).

Compound 19

N-(2-{[(6-aminopyridin-2-yl)methyl]sulfinyl}-5-chlorophenyl)-1-benzofuran-2-sulfonamide

Following General Procedure E, the title compound (71 mg, 91%) was prepared from tert-butyl {6-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}sulfinyl)methyl]pyridin-2-yl}carbamate.

¹H NMR (300 MHz, CD₃OD) δ 7.65 (d, J=7.91 Hz, 1H), 7.52-7.62 (m, 1H), 7.50 (d, J=1.47 Hz, 1H), 7.39-7.46 (m, 1H), 7.29-7.38 (m, 2H), 7.20-7.29 (m, 2H), 6.89 (dd, J=1.47, 8.50 Hz, 1H), 6.79 (d, J=8.79 Hz, 1H), 6.44 (d, J=7.03 Hz, 1H), 4.60 (d, J=13.48 Hz, 1H), 4.25 (d, J=13.19 Hz, 1H).

Compound 20

tert-butyl {6-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}sulfonyl)methyl]pyridin-2-yl}carbamate

Following General Procedure D, the title compound (60 mg, 56%) was prepared from tert-butyl {6-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)methyl]pyridin-2-yl}carbamate.

¹H NMR (300 MHz, CD₃OD) δ 7.79 (d, J=1.76 Hz, 1H), 7.65 (d, J=7.62 Hz, 1H), 7.55 (d, J=8.50 Hz, 1H), 7.44 (s, 1H), 7.18-7.40 (m, 5H), 6.72 (dd, J=1.76, 8.50 Hz, 1H), 6.60 (d, J=7.33 Hz, 1H), 4.97 (s, 2H), 1.51 (s, 9H).

Compound 21

N-(2-{[(6-aminopyridin-2-yl)methyl]sulfonyl}-5-chlorophenyl)-1-benzofuran-2-sulfonamide

Following General Procedure E, the title compound (47 mg, 94%) was prepared from tert-butyl {6-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}sulfonyl)methyl]pyridin-2-yl}carbamate.

¹H NMR (300 MHz, CD₃OD) δ 7.73 (d, J=2.05 Hz, 1H), 7.66 (d, J=7.62 Hz, 1H), 7.52 (d, J=8.79 Hz, 1H), 7.20-7.44 (m, 4H), 7.14 (t, J=7.77 Hz, 1H), 6.73 (dd, J=1.76, 8.50 Hz, 1H), 6.48 (d, J=8.20 Hz, 1H), 6.28 (d, J=7.33 Hz, 1H), 4.91 (s, 2H).

Compound 22

tert-butyl 3-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)methyl]-1H-pyrazole-1-carboxylate

Following General Procedure G, the title compound (206 mg, 36%) was prepared from N,N′-[dithiobis(5-chloro-2,1-phenylene)]bis(1-benzofuran-2-sulfonamide) and tert-butyl 3-(bromomethyl)-1H-pyrazole-1-carboxylate.

¹H NMR (600 MHz, CDCl₃) δ 8.30 (br. s., 1H), 7.93 (d, J=2.64 Hz, 1H), 7.62-7.67 (m, 2H), 7.47-7.52 (m, 1H), 7.42-7.45 (m, 1H), 7.41 (s, 1H), 7.34 (d, J=8.22 Hz, 1H), 7.28-7.32 (m, 1H), 7.00 (dd, J=2.20, 8.36 Hz, 1H), 6.03 (d, J=2.64 Hz, 1H), 3.88 (s, 2H), 1.64 (s, 9H).

Compound 23

N-{5-chloro-2-[(1H-pyrazol-3-ylmethyl)thio]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure E, the title compound (15 mg, 66%) was prepared from tert-butyl 3-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)methyl]-1H-pyrazole-1-carboxylate.

¹H NMR (600 MHz, CD₃OD) δ 7.70 (d, J=7.92 Hz, 1H), 7.51-7.55 (m, 1H), 7.45-7.50 (m, 2H), 7.37-7.44 (m, 2H), 7.34 (t, J=7.19 Hz, 1H), 7.25-7.31 (m, 1H), 7.11 (dd, J=1.76, 8.22 Hz, 1H), 5.88 (br. s., 1H), 3.89 (s, 2H).

General Procedure H

Intermediate 9

3-[(2-amino-4-chlorophenyl)thio]-N,N-dimethylpropanamide

A mixture of 2-amino-4-chlorobenzenethiol (327 mg, 2.05 mmol), N,N-dimethylacrylamide (203 mg, 2.05 mmol) and HOAc (0.5 ml) in CH₂Cl₂ (5 ml) was stirred at room temperature for 3 days. The reaction was quenched with NaHCO₃ (aq.) and then extracted with CH₂Cl₂ (2×10 ml). The organic layer was washed with water and brine and concentrated in vacuo. The crude product was purified by chromatography on silica gel (50% ethyl acetate in hexane) to yield the title compound (284 mg, 54%).

¹H NMR (300 MHz, CD₃OD) δ 7.26 (d, J=8.21 Hz, 1H), 6.76 (d, J=2.05 Hz, 1H), 6.56 (dd, J=2.34, 8.20 Hz, 1H), 2.85-3.02 (m, 8H), 2.57 (t, J=7.03 Hz, 2H).

Compound 24

3-{[4-Chloro-2-({[4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfinyl}-N,N-dimethylpropanamide

Following General Procedure B and C, the title compound (280 mg) was prepared from 3-[(2-amino-4-chlorophenyl)thio]-N,N-dimethylpropanamide (284 mg, 1.11 mmo).

¹H NMR (600 MHz, CD₃OD) δ 8.16 (d, J=1.76 Hz, 1H), 8.00 (dd, J=2.05, 8.22 Hz, 1H), 7.75 (d, J=8.51 Hz, 1H), 7.57 (d, J=8.51 Hz, 1H), 7.32 (s, 1H), 7.21 (d, J=7.92 Hz, 1H), 3.26 (br. s., 1H), 3.18 (br. s., 1H), 3.02 (s, 3H), 2.95 (s, 3H), 2.83-2.91 (m, 1H), 2.62-2.76 (m, 1H).

Compound 25

tert-Butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}sulfinyl)methyl]-1,3-thiazol-2-yl}carbamate

Following General Procedure C, tert-Butyl (4-(((2-(benzofuran-2-sulfonamido)-4-chlorophenyl)thio)methyl)thiazol-2-yl)carbamate (138 mg, 0.25 mmol) was oxidized to the title compound (97 mg, 68%).

1H NMR (600 MHz, acetone-d6) δ 10.43 (br. s., 1H), 7.75-7.84 (m, 2H), 7.66 (d, J=2.05 Hz, 1H), 7.62 (dd, J=0.88, 8.51 Hz, 1H), 7.50 (ddd, J=1.32, 7.26, 8.44 Hz, 1H), 7.32-7.41 (m, 1H), 7.11-7.24 (m, 2H), 6.74 (s, 1H), 4.47 (d, J=12.91 Hz, 1H), 4.37 (d, J=12.91 Hz, 1H), 1.50 (s, 9H).

Compound 26

N-(2-{[(2-amino-1,3-thiazol-4-yl)methyl]sulfinyl}-5-chlorophenyl)-1-benzofuran-2-sulfonamide

Following General Procedure E, tert-butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}sulfinyl)methyl]-1,3-thiazol-2-yl}carbamate (87 mg, 0.153 mmol) was de-Boc to give the title compound (58 mg, 82%).

1H NMR (600 MHz, acetone-d6) δ 10.43 (br. s., 1H), 7.75-7.84 (m, 2H), 7.66 (d, J=2.05 Hz, 1H), 7.62 (dd, J=0.88, 8.51 Hz, 1H), 7.50 (ddd, J=1.32, 7.26, 8.44 Hz, 1H), 7.32-7.41 (m, 1H), 7.11-7.24 (m, 2H), 6.74 (s, 1H), 4.47 (d, J=12.91 Hz, 1H), 4.37 (d, J=12.91 Hz, 1H), 1.50 (s, 9H).

Compound 27

tert-Butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}sulfonyl)methyl]-1,3-thiazol-2-yl}carbamate

Following General Procedure D, the title compound (112 mg, 90%) was prepared from tert-Butyl (4-(((2-(benzofuran-2-sulfonamido)-4-chlorophenyl)thio)methyl)thiazol-2-yl)carbamate (117 mg, 0.212 mmol).

1H NMR (600 MHz, acetone-d6) δ 7.80 (d, J=7.92 Hz, 2H), 7.78 (d, J=1.76 Hz, 1H), 7.67 (d, J=8.51 Hz, 1H), 7.59 (d, J=7.92 Hz, 1H), 7.50 (t, J=7.63 Hz, 1H), 7.37 (t, J=7.48 Hz, 1H), 6.99 (s., 1H), 4.70 (s., 2H), 1.53 (s, 9H)

1H NMR (600 MHz, acetone-d6) δ 7.80 (d, J=7.92 Hz, 2H), 7.67 (d, J=8.51 Hz, 1H), 7.60 (br. s., 1H), 7.50 (t, J=7.63 Hz, 1H), 7.33-7.41 (m, 1H), 6.99 (br. s., 1H), 4.70 (br. s., 2H), 1.53 (s, 9H).

Compound 28

N-(2-{[(2-amino-1,3-thiazol-4-yl)methyl]sulfonyl}-5-chlorophenyl)-1-benzofuran-2-sulfonamide

Following General Procedure E, the title compound (54 mg, 86%) was prepared from tert-butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}sulfinyl)methyl]-1,3-thiazol-2-yl}carbamate (77 mg, 0.153 mmol).

1H NMR (600 MHz, acetone-d6) δ 7.74-7.85 (m, 2H), 7.68 (d, J=2.35 Hz, 1H), 7.64 (dd, J=0.88, 8.51 Hz, 1H), 7.53 (ddd, J=1.32, 7.19, 8.51 Hz, 1H), 7.39 (ddd, J=0.88, 7.26, 8.00 Hz, 1H), 7.16-7.24 (m, 2H), 6.74 (s, 1H), 4.32-4.46 (m, 2H), 1.47-1.55 (m, 9H).

Intermediate 10

5-chloro-2-(((5-nitro-1H-pyrazol-3-yl)methyl)thio)aniline

(5-Nitro-1H-pyrazol-3-yl)methanol (524 mg, 3.66 mmol) was first treated with SOCl₂ (3 ml) in CH₂Cl₂ (5 ml) at 35° C. for 2 hrs. The solvent was removed to get a crude 3-(chloromethyl)-5-nitro-1H-pyrazole. Then following General Procedure A, the title compound (515 mg, 49%) was prepared from 2-amino-4-chlorobenzenethiol (161 mg, 1.01 mmol), crude 3-(chloromethyl)-5-nitro-1H-pyrazole, K₂CO₃ (468 mg, 3.39 mmol) in DMF (3 ml).

1H NMR (600 MHz, CD₃OD) δ 7.05 (d, J=8.22 Hz, 1H), 6.77 (d, J=2.35 Hz, 1H), 6.60 (s, 1H), 6.49 (dd, J=2.05, 8.22 Hz, 1H), 3.95 (s, 2H).

Compound 29

N-(5-chloro-2-{[(5-nitro-1H-pyrazol-3-yl)methyl]thio}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure B, the title compound (580 mg, 71%) was prepared from 5-chloro-2-(((5-nitro-1H-pyrazol-3-yl)methyl)thio)aniline (503 mg, 1.77 mmol) and benzofuran-2-sulfonyl chloride (384 mg, 1.77 mmol) in pyridine (5 ml).

1H NMR (600 MHz, CD₃OD) δ 7.70-7.73 (m, 1H), 7.53-7.56 (m, 1H), 7.49 (d, J=1.47 Hz, 1H), 7.47-7.49 (m, 1H), 7.47 (d, J=1.17 Hz, 1H), 7.45 (d, J=2.35 Hz, 1H), 7.44 (d, J=0.88 Hz, 1H), 7.35 (ddd, J=0.88, 7.26, 8.00 Hz, 1H), 7.15 (dd, J=2.35, 8.22 Hz, 1H), 6.42 (s, 1H), 3.97 (s, 2H).

Compound 30

N-(5-chloro-2-{[(5-nitro-1H-pyrazol-3-yl)methyl]sulfinyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound (155 mg, 61%) was prepared from N-(5-chloro-2-{[(5-nitro-1H-pyrazol-3-yl)methyl]thio}phenyl)-1-benzofuran-2-sulfonamide (245 mg, 0.528 mmol).

1H NMR (600 MHz, CD₃OD) δ 7.67 (dt, J=0.77, 7.56 Hz, 1H), 7.42-7.45 (m, 2H), 7.35 (td, J=1.32, 7.85 Hz, 1H), 7.24-7.29 (m, 2H), 7.09 (d, J=8.22 Hz, 1H), 6.85 (d, J=8.22 Hz, 1H), 6.33 (s, 1H), 4.61 (d, J=14.09 Hz, 1H), 4.48 (d, J=14.09 Hz, 1H).

General Procedure I

Compound 31

N-(2-{[(5-amino-1H-pyrazol-3-yl)methyl]thio}-5-chlorophenyl)-1-benzofuran-2-sulfonamide

N-(5-chloro-2-{[(5-nitro-1H-pyrazol-3-yl)methyl]thio}phenyl)-1-benzofuran-2-sulfonamide (77 mg, 0.166 mmol) was reduced to the title compound under H₂ balloon in the present of Pd/C (10% wt, 18 mg) in MeOH (3 ml).

1H NMR (600 MHz, CD₃OD) δ 7.70 (d, J=7.92 Hz, 1H), 7.52-7.56 (m, 2H), 7.48 (ddd, J=1.17, 7.12, 8.44 Hz, 1H), 7.44 (s, 1H), 7.40 (s, 1H), 7.34 (t, J=7.48 Hz, 1H), 7.28 (d, J=8.51 Hz, 1H), 7.11 (dd, J=2.20, 8.36 Hz, 1H), 3.74 (s, 2H).

Compound 32

N-(2-{[(5-amino-1H-pyrazol-3-yl)methyl]sulfinyl}-5-chlorophenyl)-1-benzofuran-2-sulfonamide

Following the General Procedure I, the title compound (39 mg, 91%) was reduced from N-(5-chloro-2-{[(5-nitro-1H-pyrazol-3-yl)methyl]sulfinyl}phenyl)-1-benzofuran-2-sulfonamide (46 mg, 0.096 mmol).

1H NMR (600 MHz, CD₃OD) δ 7.91-7.99 (m, 1H), 7.67-7.72 (m, 1H), 7.56-7.62 (m, 1H), 7.50-7.55 (m, 1H), 7.41-7.48 (m, 2H), 7.29-7.40 (m, 2H), 7.13 (dd, J=1.91, 8.36 Hz, 1H), 4.55 (d, J=13.79 Hz, 1H), 4.05 (d, J=13.79 Hz, 1H)

Compound 33

N-(2-{[(5-amino-1H-pyrazol-3-yl)methyl]sulfonyl}-5-chlorophenyl)-1-benzofuran-2-sulfonamide

Following General Procedure D and H, the title compound (27 mg) was prepared from N-(5-chloro-2-{[(5-nitro-1H-pyrazol-3-yl)methyl]thio}phenyl)-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 7.69-7.74 (m, 2H), 7.62-7.58 (m, 3H), 7.51 (dd, J=0.59, 8.51 Hz, 1H), 7.44 (ddd, J=1.17, 7.12, 8.44 Hz, 1H), 7.26-7.35 (m, 1H), 7.09 (dd, J=1.91, 8.66 Hz, 1H), 4.59 (s, 2H).

Intermediate 11

1-propyl-1H-imidazole-4-carbaldehyde

To a suspension of NaH (95%, 231 mg, 9.18 mmol) in THF (20 ml) was added 4-imidazole carboxaldehyde (588 mg, 6.12 mmol) under ice cooling. The mixture was refluxed for 2 hours under nitrogen atmosphere. The mixture was cooled to room temperature and 1-iodopropane (5 ml) was added to the mixture and then refluxed for another 2 hours. The mixture was cooled down to rt and quenched with water. The solution was extracted with EtOAc (2×50 ml), washed with brine, dried over Na₂SO₄, concentrated in vacuo. The crude product was purified by column chromatography on silica gel (0-10% MeOH in CH₂Cl₂) to give the title compound (487 mg, 58%).

1H NMR (600 MHz, CD₃OD) δ 9.73 (s, 1H), 7.97 (s, 1H), 7.84 (s, 1H), 4.07 (t, J=7.04 Hz, 2H), 1.73-1.92 (m, 2H), 0.93 (t, J=7.34 Hz, 3H).

Intermediate 12

(1-propyl-1H-imidazol-4-yl)methanol

To a solution of LAH (2.0 M in THF, 1.9 ml, 3.882 mmol) in THF (10 ml) was added dropwise a solution of 1-propyl-1H-imidazole-4-carbaldehyde (487 mg, 3.529 mmol) in THF (4 ml) at 0° C. After stirred at 0° C. for 5 min, water (0.2 ml), 15% NaOH (0.2 ml) was added dropwise to the reaction mixture under 0° C. The mixture was further stirred at room temperature for 2 hours. MgSO₄ was added to the mixture and the solid was filtered away and the filtrate was concentrated in vacuo to get a yellow oil and used without further purification.

1H NMR (600 MHz, CD₃Cl₃) δ 7.42 (s, 1H), 6.86 (s, 1H), 4.59 (s, 2H), 3.87 (t, J=7.04 Hz, 2H), 1.73-1.82 (m, 2H), 0.93 (t, J=7.34 Hz, 3H).

Intermediate 13

5-chloro-2-(((1-propyl-1H-imidazol-4-yl)methyl)thio)aniline

(1-propyl-1H-imidazol-4-yl)methanol (535 mg, 3.11 mmol) was first treated with SOCl₂ (3 ml) in CH₂Cl₂ (5 ml) at 35° C. for 2 hrs. The solvent was removed to get a crude 4-(chloromethyl)-1-propyl-1H-imidazole. Then following General Procedure A, the title compound (587 mg, 67%) was prepared from 2-amino-4-chlorobenzenethiol (744 mg, 4.66 mmol), 4-(chloromethyl)-1-propyl-1H-imidazole, K₂CO₃ (2.1 g, 15.54 mmol) in DMF (10 ml).

1H NMR (600 MHz, CDCL₃) δ 7.38 (s, 1H), 7.17 (d, J=8.22 Hz, 1H), 6.67 (d, J=2.05 Hz, 1H), 6.57 (dd, J=2.20, 8.07 Hz, 1H), 6.51 (s, 1H), 3.85 (s, 2H), 3.79 (t, J=7.04 Hz, 2H), 1.67-1.76 (m, 2H), 0.88 (t, J=7.34 Hz, 3H).

Compound 34

N-(5-chloro-2-{[(1-propyl-1H-imidazol-4-yl)methyl]thio}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure B, the title compound (463 mg, 48%) was prepared from 5-chloro-2-(((1-propyl-1H-imidazol-4-yl)methyl)thio)aniline (587 mg, 2.082 mmol) and benzofuran-2-sulfonyl chloride (451 mg, 2.082 mmol) in pyridine (10 ml).

1H NMR (600 MHz, CD₃OD) δ 7.71 (dt, J=1.03, 7.92 Hz, 1H), 7.57 (d, J=1.17 Hz, 1H), 7.52-7.55 (m, 1H), 7.44-7.51 (m, 2H), 7.42 (d, J=0.88 Hz, 1H), 7.34 (td, J=1.03, 7.56 Hz, 1H), 7.27 (d, J=8.22 Hz, 1H), 7.07 (dd, J=2.35, 8.51 Hz, 1H), 6.44-6.51 (m, 1H), 3.75-3.81 (m, 4H), 1.63 (dquin, J=7.19, 7.34 Hz, 2H), 0.74-0.82 (m, 3H).

Compound 35

N-(5-chloro-2-{[(1-propyl-1H-imidazol-4-yl)methyl]sulfinyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound (148 mg, 75%) was prepared from N-(5-chloro-2-{[(1-propyl-1H-imidazol-4-yl)methyl]thio}phenyl)-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 8.46 (s, 1H), 7.70 (dd, J=1.47, 8.22 Hz, 1H), 7.49 (dd, J=0.88, 8.51 Hz, 1H), 7.38-7.43 (m, 2H), 7.35 (d, J=0.88 Hz, 1H), 7.30 (ddd, J=1.03, 7.19, 7.92 Hz, 1H), 7.12 (d, J=8.51 Hz, 1H), 6.91 (dd, J=1.91, 8.36 Hz, 1H), 6.80 (s, 1H), 4.57 (d, J=14.38 Hz, 1H), 4.43 (d, J=14.09 Hz, 1H), 3.84-3.99 (m, 2H), 1.57-1.71 (m, 2H), 0.81 (t, J=7.34 Hz, 3H).

Compound 36

N-(5-chloro-2-{[(1-propyl-1H-imidazol-4-yl)methyl]sulfonyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound (115 mg, 60%) was prepared from N-(5-chloro-2-{[(1-propyl-1H-imidazol-4-yl)methyl]thio}phenyl)-1-benzofuran-2-sulfonamide.

1H NMR (300 MHz, CD₃OD) δ 7.82 (s, 1H), 7.71 (dd, J=1.32, 7.77 Hz, 1H), 7.67 (d, J=2.05 Hz, 1H), 7.55 (d, J=8.50 Hz, 1H), 7.44-7.50 (m, 2H), 7.41 (td, J=1.32, 7.69 Hz, 1H), 7.25-7.35 (m, 1H), 6.85 (dd, J=2.05, 8.79 Hz, 1H), 6.76 (s, 1H), 4.57 (s, 2H), 3.74 (t, J=7.03 Hz, 2H), 1.54 (quind, J=6.89, 7.07 Hz, 2H), 0.69 (t, J=7.47 Hz, 3H).

Intermediate 14

tert-butyl (4-(hydroxymethyl)pyridin-2-yl)carbamate

A solution of (2-aminopyridin-4-yl)methanol (547 mg, 4.408 mmol), di-tert-butyl dicarbonate (1.25 g, 5.730 mmol), in t-BuOH (20 ml) was stirred at room temperature overnight. The solvent was removed and added ethyl acetate, filtered away the solid and the filtrate was concentrated in vacuo. The residue was purified by column chromatography (10% MeOH in CH₂Cl₂) to give the title compound as a white solid (703 mg, 71%).

1H NMR (600 MHz, CDCl₃) δ 8.18 (d, J=5.28 Hz, 1H), 8.00 (s, 1H), 6.92-7.10 (m, 1H), 4.75 (s, 2H), 1.32-1.66 (m, 9H).

Intermediate 15

tert-butyl (4-(((2-amino-4-chlorophenyl)thio)methyl)pyridin-2-yl)carbamate

tert-butyl (4-(hydroxymethyl)pyridin-2-yl)carbamate (600 mg, 2.679 mmol) was first treated with SOCl₂ (3 ml) in CH₂Cl₂ (5 ml) at rt for 2 hrs. The solvent was removed to get a crude tert-butyl (4-(chloromethyl)pyridin-2-yl)carbamate. Then following General Procedure A, the title compound (667 mg, 68%) was prepared from 2-amino-4-chlorobenzenethiol (641 mg, 4.019 mmol), K₂CO₃ (1.8 g, 13.39 mmol) in DMF (20 ml).

1H NMR (600 MHz, CDCl₃) δ 9.83 (br. s., 1H), 8.20 (d, J=4.70 Hz, 1H), 7.85 (s, 1H), 6.92-7.18 (m, 1H), 6.60-6.75 (m, 2H), 6.55 (dd, J=2.05, 8.22 Hz, 1H), 4.42 (br. s., 2H), 3.78 (s, 2H), 1.54 (s, 9H).

Compound 37

tert-butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)methyl]pyridin-2-yl}carbamate

Following General Procedure B, the title compound (555 mg, 56%) was prepared from tert-butyl (4-(((2-amino-4-chlorophenyl)thio)methyl)pyridin-2-yl)carbamate (667 mg, 1.827 mmol) and benzofuran-2-sulfonyl chloride (396 mg, 1.827 mmol) in pyridine (10 ml).

1H NMR (600 MHz, CD₃OD) δ 7.99 (d, J=4.99 Hz, 1H), 7.64-7.73 (m, 2H), 7.59 (d, J=1.17 Hz, 1H), 7.50-7.55 (m, 1H), 7.42-7.50 (m, 2H), 7.30-7.39 (m, 1H), 7.15 (dd, J=1.03, 8.36 Hz, 1H), 6.96-7.05 (m, 1H), 6.56 (d, J=5.28 Hz, 1H), 3.77 (s, 2H), 1.48-1.61 (m, 9H).

Compound 38

N-(2-{[(2-aminopyridin-4-yl)methyl]thio}-5-chlorophenyl)-1-benzofuran-2-sulfonamide

Following General Procedure E, the title compound (76 mg, 100%) was prepared from tert-butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)methyl]pyridin-2-yl}carbamate (96 mg, 0.176 mmol).

1H NMR (600 MHz, CD₃OD) δ 7.72-7.76 (m, 2H), 7.65 (d, J=6.46 Hz, 2H), 7.58 (dd, J=0.73, 8.36 Hz, 1H), 7.46-7.53 (m, 2H), 7.42 (d, J=2.05 Hz, 1H), 7.37 (td, J=1.03, 7.56 Hz, 1H), 7.31 (d, J=8.51 Hz, 1H), 7.16 (dd, J=2.35, 8.51 Hz, 1H), 6.64 (dd, J=1.61, 6.60 Hz, 1H), 6.50 (s, 1H), 3.90 (s, 2H).

Compound 39

tert-butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}sulfonyl)methyl]pyridin-2-yl}carbamate

Following General Procedure D, the title compound (49 mg) was prepared from tert-butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)methyl]pyridin-2-yl}carbamate.

1H NMR (600 MHz, CD₃OD) δ 7.93 (d, J=6.75 Hz, 1H), 7.78 (s, 1H), 7.73 (d, J=2.05 Hz, 1H), 7.63 (d, J=7.63 Hz, 1H), 7.41 (d, J=8.80 Hz, 1H), 7.33 (s, 1H), 7.29 (d, J=3.81 Hz, 1H), 7.23 (dt, J=3.96, 7.92 Hz, 2H), 6.85 (dd, J=2.20, 6.60 Hz, 1H), 6.68 (d, J=7.92 Hz, 1H), 4.56 (br. s., 2H), 1.47 (s, 9H).

Compound 40

tert-butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}sulfonyl)methyl]-1-oxidopyridin-2-yl}carbamate

Following General Procedure D, the title compound (82 mg) was prepared from tert-butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)methyl]pyridin-2-yl}carbamate.

1H NMR (600 MHz, CD₃OD) δ 8.22 (d, J=6.46 Hz, 1H), 7.96 (s, 1H), 7.76 (d, J=16.73 Hz, 1H), 7.60-7.68 (m, 1H), 7.43 (d, J=8.51 Hz, 1H), 7.37 (s, 1H), 7.31 (br. s., 1H), 7.21-7.27 (m, 1H), 7.09 (d, J=6.46 Hz, 1H), 6.85 (d, J=6.75 Hz, 1H), 6.72 (d, J=7.63 Hz, 1H), 4.60 (br. s., 2H), 1.55 (s, 9H).

Compound 41

N-(2-{[(2-aminopyridin-4-yl)methyl]sulfonyl}-5-chlorophenyl)-1-benzofuran-2-sulfonamide

Following General Procedure E, the title compound (32 mg, 100%) was prepared from tert-butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}sulfonyl)methyl]pyridin-2-yl}carbamate.

1H NMR (600 MHz, acetone-d6) δ 7.74-7.85 (m, 3H), 7.61-7.70 (m, 2H), 7.52-7.58 (m, 1H), 7.45 (td, J=1.17, 7.92 Hz, 1H), 7.28-7.38 (m, 1H), 7.09 (dd, J=2.05, 8.51 Hz, 1H), 6.88 (s, 1H), 6.57-6.66 (m, 1H), 4.89 (s, 2H).

Compound 42

N-(2-{[(2-amino-1-oxidopyridin-4-yl)methyl]sulfonyl}-5-chlorophenyl)-1-benzofuran-2-sulfonamide

Following General Procedure E, the title compound (43 mg, 67%) was prepared from tert-butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}sulfonyl)methyl]-1-oxidopyridin-2-yl}carbamate (77 mg, 0.130 mmol).

1H NMR (600 MHz, acetone-d6) δ 8.07 (d, J=4.70 Hz, 3H), 7.76-7.81 (m, 2H), 7.74 (s, 1H), 7.64 (d, J=8.51 Hz, 1H), 7.58 (d, J=8.51 Hz, 1H), 7.46-7.49 (m, 1H), 7.32-7.37 (m, 1H), 7.15 (dd, J=1.32, 8.36 Hz, 1H), 6.94 (br. s., 1H), 6.52 (d, J=4.99 Hz, 1H), 4.76 (s, 2H).

Compound 43

N-(2-{[(2-aminopyridin-4-yl)methyl]sulfinyl}-5-chlorophenyl)-1-benzofuran-2-sulfonamide

Following General Procedure C and General Procedure E, the title compound (103 mg) was prepared from tert-butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)methyl]pyridin-2-yl}carbamate.

1H NMR (600 MHz, acetone-d6) δ 8.29 (br. s., 1H), 7.74 (dd, J=7.04, 18.19 Hz, 2H), 7.40-7.61 (m, 4H), 7.25-7.37 (m, 2H), 7.05 (d, J=7.04 Hz, 1H), 6.84 (s, 1H), 6.49 (d, J=6.16 Hz, 1H), 4.50 (d, J=12.62 Hz, 2H), 4.40 (d, J=12.62 Hz, 1H).

Intermediate 16

3-((2-amino-4-chlorophenyl)thio)-N,N-dimethylpropanamide

The solution of 2-amino-4-chlorobenzenethiol (824 mg, 5.126 mmol), N,N-dimethylacrylamide (512 mg, 5.162 mmol), and HOAc (1 ml) in CH₂Cl₂ (10 ml) was stirred at room temperature for 4 days. The solvent was removed and the residue was loaded on silica column and purified to yield a white solid (1.08 g, 83%).

1H NMR (600 MHz, CD₃OD) δ 7.26 (d, J=8.22 Hz, 1H), 6.76 (d, J=2.05 Hz, 1H), 6.56 (dd, J=2.05, 8.22 Hz, 1H), 2.93-2.97 (m, 5H), 2.90 (s, 3H), 2.58 (t, J=7.04 Hz, 2H).

Compound 44

3-{[4-chloro-2-({[4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfonyl}-N,N-dimethylpropanamide

Following General Procedure B and D, the title compound (73 mg) was prepared from 3-((2-amino-4-chlorophenyl)thio)-N,N-dimethylpropanamide (104 mg, 0.405 mmol) and 4-chloro-3-(trifluoromethyl)benzene-1-sulfonyl chloride (113 mg, 0.405 mmol).

1H NMR (600 MHz, CD₃OD) δ 8.31 (d, J=1.47 Hz, 1H), 8.12 (dd, J=1.76, 8.51 Hz, 1H), 7.70 (dd, J=8.51, 18.49 Hz, 2H), 7.58 (s, 1H), 6.90 (s., 1H), 3.73 (br. s., 2H), 3.01 (s, 3H), 2.95 (s, 3H), 2.78 (t, J=6.75 Hz, 2H).

Compound 45

3-[(4-chloro-2-{[(2,4-difluorophenyl)sulfonyl]amino}phenyl)thio]-N,N-dimethylpropanamide

Following General Procedure B, the title compound (364 mg, 72%) was prepared from 3-((2-amino-4-chlorophenyl)thio)-N,N-dimethylpropanamide (300 mg, 1.167 mmol) and 2,4-difluorobenzene-1-sulfonyl chloride (248 mg, 1.167 mmol) in pyridine (5 ml).

1H NMR (600 MHz, CD₃OD) δ 7.86 (td, J=6.02, 8.44 Hz, 1H), 7.38-7.45 (m, 2H), 7.13-7.21 (m, 2H), 7.09 (tdd, J=0.88, 2.49, 8.44 Hz, 1H), 2.95-3.01 (m, 5H), 2.93 (s, 3H), 2.56 (t, J=7.04 Hz, 2H).

Compound 46

3-[(4-chloro-2-{[(2,4-difluorophenyl)sulfonyl]amino}phenyl)sulfinyl]-N,N-dimethylpropanamide

Following General Procedure C, the title compound (130 mg, 88%) was prepared from 3-[(4-chloro-2-{[(2,4-difluorophenyl)sulfonyl]amino}phenyl)thio]-N,N-dimethylpropanamide.

1H NMR (600 MHz, CD₃OD) δ 7.90 (td, J=5.87, 8.51 Hz, 1H), 7.69 (d, J=8.51 Hz, 1H), 7.43 (dd, J=2.05, 8.51 Hz, 1H), 7.31 (d, J=2.05 Hz, 1H), 7.20-7.27 (m, 1H), 7.11-7.17 (m, 1H), 3.24-3.29 (m, 1H), 3.12-3.20 (m, 1H), 3.05 (s, 3H), 2.93 (s, 3H), 2.85-2.92 (m, J=4.40 Hz, 1H), 2.72-2.80 (m, J=6.46, 6.46, 17.02 Hz, 1H).

Compound 47

3-[(4-chloro-2-{[(2,4-difluorophenyl)sulfonyl]amino}phenyl)sulfonyl]-N,N-dimethylpropanamide

Following General Procedure D, the title compound (70 mg, 71%) was prepared from 3-[(4-chloro-2-{[(2,4-difluorophenyl)sulfonyl]amino}phenyl)thio]-N,N-dimethylpropanamide.

1H NMR (600 MHz, CD₃OD) δ 8.01-8.12 (m, 1H), 7.76 (d, J=8.51 Hz, 2H), 7.49-7.60 (m, 2H), 6.95-7.24 (m, 3H), 3.72 (br. s., 2H), 3.01 (s, 3H), 2.90 (s, 3H), 2.78 (t, J=7.04 Hz, 2H).

Compound 48

3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)thio]-N,N-dimethylpropanamide

Following General Procedure B, the title compound (476 mg, 75%) was prepared from 3-((2-amino-4-chlorophenyl)thio)-N,N-dimethylpropanamide (364 mg, 1.42 mmol) and 4-chloro-2-fluorobenzene-1-sulfonyl chloride (325 mg, 1.42 mmol) in pyridine (5 ml).

1H NMR (600 MHz, acetone-d6) δ 9.57 (br. s., 1H), 7.86 (t, J=8.07 Hz, 1H), 7.50-7.56 (m, 2H), 7.45 (dd, J=1.91, 9.83 Hz, 1H), 7.40 (dd, J=1.91, 8.36 Hz, 1H), 7.17 (dd, J=2.35, 8.22 Hz, 1H), 2.94-3.01 (m, 5H), 2.91 (s, 3H), 2.54 (t, J=6.46 Hz, 3H).

Compound 49

3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)sulfinyl]-N,N-dimethylpropanamide

Following General Procedure C, the title compound (90 mg, 55%) was prepared from 3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)thio]-N,N-dimethylpropanamide.

1H NMR (600 MHz, CD₃OD) δ 7.78-7.90 (m, 1H), 7.48 (d, J=8.51 Hz, 1H), 7.27-7.34 (m, 2H), 7.26 (d, J=2.05 Hz, 1H), 7.03 (d, J=7.92 Hz, 1H), 3.43 (ddd, J=6.31, 9.02, 13.43 Hz, 1H), 3.16 (ddd, J=5.58, 9.10, 13.50 Hz, 1H), 2.99 (s, 3H), 2.92 (s, 3H), 2.79-2.88 (m, J=6.46, 9.17, 16.07 Hz, 1H), 2.52-2.64 (m, 1H).

Compound 50

3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)sulfonyl]-N,N-dimethylpropanamide

Following General Procedure D, the title compound (81 mg, 48%) was prepared from 3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)thio]-N,N-dimethylpropanamide.

1H NMR (600 MHz, CD₃OD) δ 7.89-7.98 (m, 1H), 7.69 (d, J=8.51 Hz, 1H), 7.46 (d, J=2.05 Hz, 1H), 7.20-7.30 (m, 2H), 6.76 (d, J=7.63 Hz, 1H), 3.86 (t, J=7.19 Hz, 2H), 2.97 (s, 3H), 2.93 (s, 3H), 2.70 (t, J=7.34 Hz, 2H).

Intermediate 17

tert-butyl (5-(hydroxymethyl)-4H-1,2,4-triazol-3-yl)carbamate

(5-amino-4H-1,2,4-triazol-3-yl)methanol (467 mg, 4.093 mmol), di-tert-butyl dicarbonate (1.16 g, 5.32 mmol), in t-BuOH (20 ml) was stirred at room temperature overnight. The solvent was removed and added ethyl acetate, filtered away the solid and the filtrate was concentrated in vacuo. The residue was purified by column chromatography (10% MeOH in CH₂Cl₂) to give the title compound as a yellow oil (190 mg, 22%).

1H NMR (300 MHz, CD₃OD) δ 4.44 (s, 2H), 1.63 (s, 9H).

General Procedure J

Intermediate 18

tert-butyl (5-(((2-amino-4-chlorophenyl)thio)methyl)-4H-1,2,4-triazol-3-yl)carbamate

A solution of tert-butyl (5-(hydroxymethyl)-4H-1,2,4-triazol-3-yl)carbamate (190 mg, 0.888 mmol), 2-amino-4-chlorobenzenethiol (213 mg, 1.332 mmol), PPh₃ (466 mg, 1.776 mmol) and di-tert-butylazodicarboxylate (409 mg, 1.776 mmol) in CH₂Cl₂ (10 ml) was stirred at room temperature for 2 days. The solvent was then removed and the crude residues was loaded on silica gel column to get the title compound.

1H NMR (600 MHz, CD₃OD) δ 7.18 (s, 1H), 6.73 (d, J=2.35 Hz, 1H), 6.49 (dd, J=2.35, 8.22 Hz, 2H), 3.68 (s, 2H), 1.60 (s, 9H).

Intermediate 19

tert-butyl (5-(((2-(benzofuran-2-sulfonamido)-4-chlorophenyl)thio)methyl)-4H-1,2,4-triazol-3-yl)carbamate

Following General Procedure B, the title compound was prepared from tert-butyl (5-(((2-amino-4-chlorophenyl)thio)methyl)-4H-1,2,4-triazol-3-yl)carbamate (330 mg, 0.925 mmol) and benzofuran-2-sulfonyl chloride (200 mg, 0.925 mmol) in pyridine (2 ml).

1H NMR (600 MHz, CD₃OD) δ 7.69 (dd, J=0.88, 7.92 Hz, 1H), 7.45-7.57 (m, 4H), 7.40 (s, 1H), 7.29-7.35 (m, 1H), 7.16 (dd, J=2.35, 8.22 Hz, 1H), 3.70 (s, 2H), 1.61 (s, 9H).

Compound 51

N-(2-{[(5-amino-4H-1,2,4-triazol-3-yl)methyl]thio}-5-chlorophenyl)-1-benzofuran-2-sulfonamide

Following General Procedure E, the title compound (13 mg) was prepared from tert-butyl (5-(((2-(benzofuran-2-sulfonamido)-4-chlorophenyl)thio)methyl)-4H-1,2,4-triazol-3-yl)carbamate.

1H NMR (600 MHz, CD₃OD) δ 7.71 (d, J=7.92 Hz, 1H), 7.55 (d, J=8.51 Hz, 1H), 7.39-7.51 (m, 5H), 7.31-7.37 (m, 1H), 7.16 (d, J=7.04 Hz, 1H), 3.82 (s, 2H).

Compound 52

N-(2-{[(5-amino-4H-1,2,4-triazol-3-yl)methyl]sulfinyl}-5-chlorophenyl)-1-benzofuran-2-sulfonamide

Following General Procedure C and E, the title compound (15 mg) was prepared from tert-butyl (5-(((2-(benzofuran-2-sulfonamido)-4-chlorophenyl)thio)methyl)-4H-1,2,4-triazol-3-yl)carbamate.

1H NMR (600 MHz, CD₃OD) δ 7.75 (dd, J=1.17, 7.92 Hz, 1H), 7.57-7.64 (m, 2H), 7.51-7.55 (m, 1H), 7.50 (d, J=0.88 Hz, 1H), 7.44 (dd, J=1.91, 8.36 Hz, 1H), 7.35-7.41 (m, 1H), 7.20 (d, J=2.05 Hz, 1H), 4.45 (d, J=14.09 Hz, 1H), 4.24 (d, J=14.09 Hz, 1H).

Intermediate 20

5-chloro-2-((2-(pyridin-2-yl)ethyl)thio)aniline

2-(Pyridin-2-yl)ethanol (1 g, 8.12 mmol) was first treated with SOCl₂ (3 ml) in CH₂Cl₂ (10 ml) at rt for 3 hrs. The solvent was removed to get a crude 2-(2-chloroethyl)pyridine. Then following General Procedure A, the title compound (1.69 g, 79%) was prepared from 2-amino-4-chlorobenzenethiol (1.6 g, 9.74 mmol), K₂CO₃ (3.36 g, 24.36 mmol) in DMF (20 ml).

1H NMR (600 MHz, CD₃OD) δ 8.39-8.42 (m, 1H), 7.73 (td, J=1.76, 7.63 Hz, 1H), 7.28 (d, J=7.63 Hz, 1H), 7.23 (d, J=8.22 Hz, 2H), 6.75 (d, J=2.35 Hz, 1H), 6.55 (dd, J=2.35, 8.22 Hz, 1H), 3.06-3.10 (m, 2H), 2.96-3.01 (m, 2H).

Compound 53

N-{5-chloro-2-[(2-pyridin-2-ylethyl)thio]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure B, the title compound was prepared from 5-chloro-2-((2-(pyridin-2-yl)ethyl)thio)aniline (439 mg, 1.663 mmol) and benzofuran-2-sulfonyl chloride (2×359 mg, 2×1.663 mmol) in pyridine (5 ml).

1H NMR (600 MHz, CD₃OD) δ 8.54-8.62 (m, 1H), 7.85 (s, 1H), 7.71-7.78 (m, 1H), 7.67 (dt, J=1.03, 7.92 Hz, 1H), 7.56 (d, J=2.35 Hz, 1H), 7.39-7.48 (m, 2H), 7.36 (s, 1H), 7.27-7.32 (m, 2H), 7.15-7.22 (m, 2H), 2.98 (t, J=7.04 Hz, 2H), 2.74 (t, J=6.90 Hz, 2H).

Compound 54

N-{5-chloro-2-[(2-pyridin-2-ylethyl)sulfinyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound (45 mg, 79%) was prepared from N-{5-chloro-2-[(2-pyridin-2-ylethyl)thio]phenyl}-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 8.52-8.60 (m, 1H), 7.81 (td, J=1.76, 7.63 Hz, 1H), 7.64-7.71 (m, 2H), 7.26-7.47 (m, 8H), 3.40-3.50 (m, 1H), 3.29-3.37 (m, 1H), 3.16-3.26 (m, OH), 2.83-2.95 (m, J=7.48, 7.48, 14.97 Hz, 1H).

Compound 55

N-{5-chloro-2-[(2-pyridin-2-ylethyl)sulfonyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound (20 mg) was prepared from N-{5-chloro-2-[(2-pyridin-2-ylethyl)thio]phenyl}-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 8.30 (ddd, J=1.47, 1.61, 4.55 Hz, 1H), 7.71-7.76 (m, 2H), 7.61-7.68 (m, 2H), 7.52 (d, J=0.88 Hz, 1H), 7.31-7.36 (m, 1H), 7.24-7.31 (m, 2H), 7.18-7.23 (m, 2H), 7.05 (dd, J=2.05, 8.51 Hz, 1H), 3.84-3.89 (m, 2H), 3.00-3.14 (m, 2H).

Intermediate 21

2-((2-(1H-pyrazol-4-yl)ethyl)thio)-5-chloroaniline

Following the General Procedure J, the title intermediate was prepared from 2-(1H-pyrazol-4-yl)ethanol (472 mg, 4.218 mmol), 2-amino-4-chlorobenzenethiol (1.01 g, 6.327 mmol), PPh₃ (2.21 g, 8.436 mmol) and di-tert-butylazodicarboxylate (1.9 g, 8.436 mmol) in CH₂Cl₂ (20 ml).

1H NMR (600 MHz, CD₃OD) δ 7.98 (d, J=0.88 Hz, 1H), 7.64 (s, 1H), 7.23 (d, J=8.22 Hz, 1H), 6.76 (d, J=2.35 Hz, 1H), 6.55 (dd, J=2.05, 8.22 Hz, 1H), 2.89-3.00 (m, 2H), 2.65-2.77 (m, 2H).

Compound 56

N-(5-chloro-2-{([2-(1H-pyrazol-4-yl)ethyl]thio}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure B, the title compound (123 mg) was prepared from 2-((2-(1H-pyrazol-4-yl)ethyl)thio)-5-chloroaniline (157 mg, 0.618 mmol) and benzofuran-2-sulfonyl chloride (133 mg, 0.618 mmol) in pyridine (3 ml).

1H NMR (600 MHz, CD₃OD) δ 7.70 (d, J=7.92 Hz, 1H), 7.43-7.53 (m, 3H), 7.39 (s, 1H), 7.28-7.36 (m, 4H), 7.17 (dd, J=1.76, 8.51 Hz, 1H), 2.82 (t, J=7.63 Hz, 2H), 2.45 (t, J=7.63 Hz, 2H).

Compound 57

N-(5-chloro-2-{[2-(1H-pyrazol-4-yl)ethyl]sulfinyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound (52 mg, 40%) was prepared from N-{5-chloro-2-[(2-pyridin-2-ylethyl)thio]phenyl}-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 7.75-7.81 (m, 1H), 7.72 (td, J=1.76, 7.63 Hz, 1H), 7.67 (d, J=0.88 Hz, 1H), 7.48-7.59 (m, 3H), 7.40-7.45 (m, 2H), 7.19-7.34 (m, 3H), 7.17 (d, J=2.35 Hz, 1H), 3.19-3.26 (m, 3H), 2.87 (t, J=7.63 Hz, 2H).

Compound 58

N-(5-chloro-2-{[2-(1H-pyrazol-4-yl)ethyl]sulfonyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound (75 mg, 73%) was prepared from N-{5-chloro-2-[(2-pyridin-2-ylethyl)thio]phenyl}-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 7.67-7.74 (m, 2H), 7.62 (d, J=7.63 Hz, 1H), 7.39 (s, 2H), 7.31 (t, J=7.19 Hz, 2H), 7.22-7.26 (m, 1H), 7.17 (d, J=8.22 Hz, 1H), 6.80-6.90 (m, 1H), 3.89 (br. s., 2H), 2.71-2.81 (m, 2H).

Intermediate 22

5-Chloro-2-[2-(3,5-dimethyl-1H-pyrazol-4-O-ethylsulfanyl]-phenylamine

Following General Procedure A, the title compound (517 mg, 74%) was prepared from 2-Amino-4-chloro-benzenethiol (590 mg, 3.693 mmol) and 4-(2-bromo-ethyl)-3,5-dimethyl-1H-pyrazole (500 mg, 2.462 mmol), K₂CO₃ (1.7 g, 12.31 mmol) in DMF (20 ml).

1H NMR (600 MHz, CD₃OD) δ 7.24 (d, J=8.22 Hz, 1H), 6.77 (d, J=2.05 Hz, 1H), 6.56 (dd, J=2.35, 8.22 Hz, 1H), 2.75-2.80 (m, 2H), 2.53-2.61 (m, 2H), 2.08 (s, 6H).

Compound 59

N-(5-chloro-2-{[2-(3,5-dimethyl-1H-pyrazol-4-yl)ethyl]thio}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure B, the title compound (235 mg) was prepared from 2-((2-(1H-pyrazol-4-yl)ethyl)thio)-5-chloroaniline (157 mg, 0.618 mmol) and benzofuran-2-sulfonyl chloride (133 mg, 0.618 mmol) in pyridine (3 ml).

1H NMR (600 MHz, CD₃OD) δ 7.68 (dd, J=0.88, 7.92 Hz, 1H), 7.52 (d, J=2.35 Hz, 1H), 7.39-7.47 (m, 3H), 7.27-7.35 (m, 2H), 7.18 (dd, J=2.35, 8.51 Hz, 1H), 2.65-2.72 (m, J=7.63 Hz, 2H), 2.28-2.35 (m, 2H), 1.97 (s, 6H).

Intermediate 23

5-chloro-2-(((2-fluoropyridin-3-yl)methyl)thio)aniline

(2-Fluoropyridin-3-yl)methanol (508 mg, 3.998 mmol) was first treated with SOCl₂ (1.5 ml) in CH₂Cl₂ (5 ml) at rt for 3 hrs. The solvent was removed to get a crude 3-(chloromethyl)-2-fluoropyridine. Then following General Procedure A, the title compound (910 mg, 85%) was prepared from 2-amino-4-chlorobenzenethiol (957 mg, 5.995 mmol), K₂CO₃ (2.7 g, 19.98 mmol) in DMF (20 ml).

1H NMR (600 MHz, CD₃OD) δ 8.01 (dt, J=0.88, 4.99 Hz, 1H), 7.42 (ddd, J=1.91, 7.48, 9.68 Hz, 1H), 7.10 (ddd, J=1.76, 5.14, 7.19 Hz, 1H), 6.91 (d, J=8.22 Hz, 1H), 6.73 (d, J=2.05 Hz, 1H), 6.42 (dd, J=2.35, 8.22 Hz, 1H), 3.90 (s, 2H).

Compound 60

N-(5-chloro-2-{[(2-fluoropyridin-3-yl)methyl]thio}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure B, the title compound (235 mg) was prepared from 5-chloro-2-(((2-fluoropyridin-3-yl)methyl)thio)aniline (522 mg, 1.948 mmol) and benzofuran-2-sulfonyl chloride (421 mg, 1.948 mmol) in pyridine (5 ml).

1H NMR (600 MHz, acetone-d6) δ 9.00 (br. s., 1H), 8.05 (dt, J=1.47, 4.70 Hz, 1H), 7.79 (d, J=6.75 Hz, 1H), 7.55-7.63 (m, 3H), 7.43-7.54 (m, 2H), 7.33-7.40 (m, 1H), 7.26 (d, J=8.22 Hz, 1H), 7.07-7.17 (m, 2H), 4.01 (s, 2H).

Compound 61

N-(5-chloro-2-{[(2-fluoropyridin-3-yl)methyl]sulfinyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound (100 mg, 59%) was prepared from N-(5-chloro-2-{[(2-fluoropyridin-3-yl)methyl]thio}phenyl)-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 7.99 (dd, J=1.91, 4.84 Hz, 1H), 7.65 (d, J=7.34 Hz, 1H), 7.49 (d, J=2.05 Hz, 1H), 7.38 (d, J=8.51 Hz, 1H), 7.28-7.33 (m, 1H), 7.19-7.26 (m, 3H), 7.00 (ddd, J=1.47, 5.21, 7.12 Hz, 1H), 6.81 (d, J=8.22 Hz, 1H), 6.70 (dd, J=2.05, 8.22 Hz, 1H), 4.43-4.59 (m, 2H).

Compound 62

N-(5-chloro-2-{[(2-fluoropyridin-3-yl)methyl]sulfonyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound (176 mg, 67%) was prepared from N-(5-chloro-2-{[(2-fluoropyridin-3-yl)methyl]thio}phenyl)-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, acetone-d6) δ 8.04 (d, J=4.70 Hz, 1H), 7.91 (d, J=2.05 Hz, 1H), 7.70 (d, J=7.63 Hz, 1H), 7.18-7.44 (m, 6H), 6.90 (t, J=5.43 Hz, 1H), 6.67 (d, J=7.63 Hz, 1H), 4.96 (s, 2H).

Intermediate 24

2-(benzylthio)-5-chloroaniline

Following General Procedure A, the title compound (819 mg, 100%) was prepared from 2-amino-4-chlorobenzenethiol (700 mg, 4.39 mmol), (bromomethyl)benzene (560 mg, 2.92 mmol), K₂CO₃ (2.0 g, 14.62 mmol) in DMF (20 ml).

1H NMR (600 MHz, CD₃OD) δ 7.15-7.24 (m, 3H), 7.07-7.13 (m, 2H), 6.97 (d, J=8.22 Hz, 1H), 6.73 (d, J=2.05 Hz, 1H), 6.43 (dd, J=2.05, 8.22 Hz, 1H), 3.86 (s, 2H).

Compound 63

N-[2-(benzylthio)-5-chlorophenyl]-1-benzofuran-2-sulfonamide

Following General Procedure B, the title compound (235 mg) was prepared from 2-(benzylthio)-5-chloroaniline (509 mg, 2.052 mmol) and benzofuran-2-sulfonyl chloride (443 mg, 2.052 mmol) in pyridine (5 ml).

1H NMR (600 MHz, CD₃OD) δ 7.73 (d, J=7.92 Hz, 3H), 7.45-7.56 (m, 3H), 7.42 (s, 1H), 7.32-7.38 (m, 1H), 7.10-7.18 (m, 4H), 7.04-7.08 (m, 1H), 6.85-6.94 (m, 2H), 3.81 (s, 2H).

Compound 64

N-[2-(benzylsulfinyl)-5-chlorophenyl]-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound (139 mg, 84%) was prepared from N-[2-(benzylthio)-5-chlorophenyl]-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 7.65 (d, J=7.92 Hz, 1H), 7.49 (d, J=2.05 Hz, 1H), 7.37 (dd, J=0.73, 8.36 Hz, 1H), 7.28-7.33 (m, 1H), 7.16-7.27 (m, 3H), 7.08-7.14 (m, 2H), 7.01 (d, J=6.75 Hz, 2H), 6.97 (d, J=8.51 Hz, 1H), 6.73 (dd, J=1.91, 8.36 Hz, 1H), 4.50 (d, J=12.91 Hz, 1H), 4.14 (d, J=12.91 Hz, 1H).

Compound 65

N-[2-(benzylsulfonyl)-5-chlorophenyl]-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound (212 mg, 95%) was prepared from N-[2-(benzylthio)-5-chlorophenyl]-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 7.63-7.73 (m, 2H), 7.40 (dd, J=0.73, 8.36 Hz, 1H), 7.30-7.37 (m, 3H), 7.23-7.29 (m, 1H), 7.08-7.16 (m, 3H), 6.98-7.05 (m, 2H), 6.60 (dd, J=2.05, 8.51 Hz, 1H), 4.99 (s, 2H).

General Procedure K

Intermediate 25

2-amino-4-fluorobenzenethiol

A solution of 5-fluoro-2-methylbenzo[d]thiazole (1.2 g, 7.18 mmol) in ethylene glycol and NaOH (5N, 2 ml) was degassed under N₂ for 10 min, then refluxed at 129° C. for 3 hours. The solution was cooled to 0° C. and then acidified to pH 3˜4 using c. HCl. The mixture was extracted with EtOAc (2×50 ml). The organic layer was washed with brine and dried with Na₂SO₄ and concentrated in vacuo. The crude residue (1.01 g, 98%) was used directly in the next step without purification.

1H NMR (600 MHz, CD₃OD) δ 7.24 (dd, J=6.16, 8.51 Hz, 1H), 6.97 (dd, J=6.46, 8.51 Hz, 1H), 6.20 (td, J=2.79, 8.58 Hz, 1H).

Intermediate 26

5-fluoro-2-((3-nitrobenzyl)thio)aniline

Following General Procedure A, the title compound (460 mg, 97%) was prepared from 2-amino-4-fluorobenzenethiol (562 g, 3.93 mmol), 1-(bromomethyl)-3-nitrobenzene (566 mg, 2.62 mmol), K₂CO₃ (1.8 g, 13.10 mmol) in DMF (10 ml).

¹H NMR (600 MHz, CD₃OD) δ 8.04 (dt, J=2.09, 7.26 Hz, 1H), 7.89 (s, 1H), 7.34-7.54 (m, 2H), 6.93 (dd, J=6.46, 8.51 Hz, 1H), 6.35-6.53 (m, 1H), 6.15 (td, J=2.64, 8.51 Hz, 1H), 3.95 (s, 2H).

Compound 66

N-(5-fluoro-2-((3-nitrobenzyl)thio)phenyl)benzofuran-2-sulfonamide

Following General Procedure B, the title compound (474 mg, 63%) was prepared from 2-((3-aminobenzyl)thio)-5-fluoroaniline (460 mg, 1.655 mmol) and benzofuran-2-sulfonyl chloride (357 mg, 1.655 mmol) in pyridine (5 ml).

1H NMR (600 MHz, CD₃OD) δ 7.98 (ddd, J=0.88, 2.35, 8.22 Hz, 1H), 7.68-7.79 (m, 2H), 7.49-7.54 (m, 2H), 7.42-7.48 (m, 1H), 7.25-7.39 (m, 4H), 7.16 (dd, J=6.16, 8.80 Hz, 1H), 6.78 (td, J=2.93, 8.36 Hz, 1H), 3.91 (s, 2H).

General Procedure L

Compound 67

N-{2-[(3-aminobenzyl)thio]-5-fluorophenyl}-1-benzofuran-2-sulfonamide

N-(5-fluoro-2-((3-nitrobenzyl)thio)phenyl)benzofuran-2-sulfonamide (91 mg, 0.199 mmol) was dissolved in MeOH (2 ml). Zn (322 mg, 4.967 mmol) and NH₄Cl (1 ml) was added to the solution. After the mixture was stirred for 30 min at room temperature, the solid was filtered and the filtrate was concentrated in vacuo and then the crude residue was purified by column chromatography (0→30% EtOAc in hexane) to afford the title product (50 mg, 59%).

1H NMR (600 MHz, CD₃OD) δ 7.71 (d, J=7.92 Hz, 1H), 7.50-7.54 (m, 1H), 7.48 (d, J=0.88 Hz, 1H), 7.46 (ddd, J=1.32, 7.26, 8.44 Hz, 1H), 7.28-7.38 (m, 2H), 7.19 (dd, J=6.16, 8.80 Hz, 1H), 6.83-6.89 (m, 1H), 6.77 (td, J=2.79, 8.44 Hz, 1H), 6.46-6.54 (m, 1H), 6.36 (t, J=1.76 Hz, 1H), 6.22 (d, J=7.63 Hz, 1H), 3.63 (s, 2H).

Compound 68

N-{2-[(3-aminobenzyl)sulfinyl]-5-fluorophenyl}-1-benzofuran-2-sulfonamide

Following General Procedure L, the title compound (130 mg, 84%) was prepared from N-{5-fluoro-2-[(3-nitrobenzyl)sulfinyl]phenyl}-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 7.75 (dd, J=0.88, 7.92 Hz, 1H), 7.53-7.60 (m, 2H), 7.48 (ddd, J=1.32, 7.26, 8.44 Hz, 1H), 7.33-7.38 (m, 1H), 7.28 (dd, J=6.16, 8.80 Hz, 1H), 7.14 (dd, J=2.64, 10.27 Hz, 1H), 6.88-7.02 (m, 2H), 6.71 (dt, J=1.06, 8.14 Hz, 1H), 6.57 (s, 1H), 6.41 (d, J=7.63 Hz, 1H), 4.24 (d, J=12.62 Hz, 1H), 4.06 (d, J=12.91 Hz, 1H).

Compound 69

N-{5-fluoro-2-[(3-nitrobenzyl)sulfonyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound (136 mg, 74%) was prepared from N-(5-fluoro-2-((3-nitrobenzyl)thio)phenyl)benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 8.10 (ddd, J=1.17, 2.13, 8.14 Hz, 1H), 7.72-7.81 (m, 3H), 7.65 (dd, J=6.02, 8.95 Hz, 1H), 7.55 (d, J=8.51 Hz, 1H), 7.45-7.51 (m, 3H), 7.41-7.45 (m, 1H), 7.33-7.39 (m, 1H), 6.80-7.09 (m, 1H), 4.70 (s, 2H).

Compound 70

N-{2-[(3-aminobenzyl)sulfonyl]-5-fluorophenyl}-1-benzofuran-2-sulfonamide

Following General Procedure L, the title compound (91 mg, 81%) was prepared from N-{5-fluoro-2-[(3-nitrobenzyl)sulfonyl]phenyl}-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, acetone-d6) δ 7.87 (br. s., 1H), 7.84 (d, J=7.92 Hz, 2H), 7.57-7.65 (m, 2H), 7.50-7.56 (m, 2H), 7.39 (t, J=7.48 Hz, 1H), 6.94-7.02 (m, 1H), 6.83 (t, J=7.78 Hz, 1H), 6.53 (d, J=8.80 Hz, 1H), 6.38 (s, 1H), 6.13 (d, J=7.34 Hz, 1H), 4.38 (s, 2H).

Intermediate 27

5-methoxy-2-((3-nitrobenzyl)thio)aniline

Following General Procedure K and A, the title compound (474 mg) was prepared from 5-methoxy-2-methylbenzo[d]thiazole.

1H NMR (600 MHz, CD₃OD) δ 8.03 (dt, J=2.05, 7.34 Hz, 1H), 7.84 (d, J=1.76 Hz, 1H), 7.34-7.48 (m, 2H), 6.83 (d, J=8.51 Hz, 1H), 6.32 (s, 1H), 6.06 (dd, J=2.79, 8.36 Hz, 1H), 3.90 (s, 2H), 3.69 (s, 3H).

Compound 71

N-{2-[(3-aminobenzyl)thio]-5-methoxyphenyl}-1-benzofuran-2-sulfonamide

Following General Procedure L, the title compound (82 mg, 70%) was prepared from N-(5-methoxy-2-((3-nitrobenzyl)thio)phenyl)benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 7.69 (d, J=7.92 Hz, 1H), 7.50 (dd, J=0.88, 8.51 Hz, 1H), 7.40-7.47 (m, 2H), 7.31 (ddd, J=1.03, 7.19, 7.92 Hz, 1H), 7.07-7.13 (m, 2H), 6.84-6.90 (m, 1H), 6.57 (dd, J=2.79, 8.66 Hz, 1H), 6.50-6.54 (m, 1H), 6.37 (t, J=1.91 Hz, 1H), 6.25 (d, J=7.63 Hz, 1H), 3.72 (s, 3H), 3.57 (s, 2H).

Compound 72

N-{5-methoxy-2-[(3-nitrobenzyl)sulfinyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound (95 mg, 46%) was prepared from N-(5-methoxy-2-((3-nitrobenzyl)thio)phenyl)benzofuran-2-sulfonamide.

1H NMR (600 MHz, acetone-d6) δ 10.74 (br. s., 1H), 8.16 (ddd, J=0.88, 2.35, 8.22 Hz, 1H), 7.78-7.86 (m, 2H), 7.75 (s, 1H), 7.61 (dd, J=0.88, 8.51 Hz, 1H), 7.56 (t, J=7.92 Hz, 1H), 7.44-7.52 (m, 2H), 7.35-7.40 (m, 1H), 7.09 (d, J=2.35 Hz, 1H), 7.06 (d, J=8.80 Hz, 1H), 6.69 (dd, J=2.49, 8.66 Hz, 1H), 4.45-4.53 (m, 2H), 3.77 (s, 3H).

Compound 73

N-{2-[(3-aminobenzyl)sulfinyl]-5-methoxyphenyl}-1-benzofuran-2-sulfonamide

Following General Procedure L, the title compound (55 mg, 65%) was prepared from N-{5-methoxy-2-[(3-nitrobenzyl)sulfinyl]phenyl}-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, acetone-d6) δ 7.75-7.85 (m, 2H), 7.59 (dd, J=0.59, 8.51 Hz, 1H), 7.44-7.53 (m, 1H), 7.32-7.40 (m, 1H), 7.25 (s, 1H), 6.93 (d, J=8.51 Hz, 1H), 6.85-6.90 (m, 1H), 6.61 (dd, J=2.49, 8.66 Hz, 1H), 6.53-6.58 (m, 1H), 6.40 (t, J=1.76 Hz, 1H), 6.21 (d, J=7.92 Hz, 1H), 4.25 (d, J=12.32 Hz, 1H), 4.08 (d, J=11.74 Hz, 2H), 3.78 (s, 3H).

Compound 74

N-(5-methoxy-2-((3-nitrobenzyl)sulfonyl)phenyl)benzofuran-2-sulfonamide

Following General Procedure D, the title compound (165 mg, 83%) was prepared from N-(5-methoxy-2-((3-nitrobenzyl)thio)phenyl)benzofuran-2-sulfonamide.

1H NMR (600 MHz, CDCl₃) δ 9.28 (s, 1H), 8.14-8.19 (m, 1H), 7.70 (d, J=7.63 Hz, 1H), 7.64 (s, 1H), 7.58 (s, 1H), 7.41-7.50 (m, 3H), 7.37 (d, J=9.10 Hz, 1H), 7.33 (td, J=1.03, 7.41 Hz, 1H), 7.29 (d, J=2.35 Hz, 1H), 7.26 (s, 1H), 6.57 (dd, J=2.35, 8.80 Hz, 1H), 4.38 (s, 2H), 3.86 (s, 3H).

Compound 75

N-{2-[(3-aminobenzyl)sulfonyl]-5-methoxyphenyl}-1-benzofuran-2-sulfonamide

Following General Procedure L, the title compound (67 mg, 45%) was prepared from N-(5-methoxy-2-((3-nitrobenzyl)sulfonyl)phenyl)benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 7.70 (d, J=7.63 Hz, 1H), 7.42-7.50 (m, 2H), 7.35-7.41 (m, 1H), 7.33 (d, J=8.80 Hz, 1H), 7.27-7.31 (m, 1H), 7.22 (d, J=2.35 Hz, 1H), 6.76 (t, J=7.78 Hz, 1H), 6.53 (dd, J=1.32, 8.07 Hz, 1H), 6.45 (s, 1H), 6.39 (d, J=8.51 Hz, 1H), 6.27 (d, J=7.63 Hz, 1H), 4.61 (br. s., 2H), 3.76 (s, 3H).

Compound 76

Benzofuran-2-sulfonic acid [2-(3-nitro-benzylsulfanyl)-phenyl]-amide

Following General Procedure B, the title compound (520 mg, 41%) was prepared from 2-((3-nitrobenzyl)thio)aniline (741 mg, 2.85 mmol), benzofuran-2-sulfonyl chloride (616 mg, 2.85 mmol) in pyridine (10 ml).

1H NMR (600 MHz, CD₃OD) δ 7.97-8.04 (m, 1H), 7.79-7.89 (m, 1H), 7.70 (d, J=0.88 Hz, 1H), 7.50 (d, J=0.88 Hz, 1H), 7.29-7.47 (m, 6H), 7.15-7.25 (m, 2H), 7.02-7.11 (m, 1H), 3.99 (s, 2H).

Compound 77

N-{2-[(3-aminobenzyl)thio]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure L, the title compound (67 mg, 45%) was prepared from benzofuran-2-sulfonic acid [2-(3-nitro-benzylsulfanyl)-phenyl]-amide.

1H NMR (600 MHz, CD₃OD) δ 7.66 (d, J=7.92 Hz, 1H), 7.47-7.52 (m, 1H), 7.38-7.46 (m, 2H), 7.26-7.35 (m, 2H), 7.12-7.22 (m, 2H), 7.04 (td, J=1.47, 7.63 Hz, 1H), 6.88 (t, J=7.78 Hz, 1H), 6.54 (dd, J=1.47, 7.92 Hz, 1H), 6.43 (t, J=1.76 Hz, 1H), 6.28 (d, J=7.63 Hz, 1H), 3.69 (s, 2H).

Compound 78

N-{2-[(3-nitrobenzyl)sulfinyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound (172 mg, 73%) was prepared from benzofuran-2-sulfonic acid [2-(3-nitro-benzylsulfanyl)-phenyl]-amide.

1H NMR (600 MHz, acetone-d6) δ 10.45 (br. s., 1H), 8.15 (d, J=8.22 Hz, 1H), 7.85 (s, 1H), 7.80 (d, J=7.92 Hz, 1H), 7.66 (d, J=0.88 Hz, 1H), 7.59-7.63 (m, 1H), 7.42-7.57 (m, 5H), 7.34-7.40 (m, 1H), 7.13-7.24 (m, 2H), 4.54-4.60 (m, 1H), 4.45-4.51 (m, 1H).

Compound 79

N-{2-[(3-aminobenzyl)sulfinyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure L, the title compound (122 mg, 90%) was prepared from N-{2-[(3-nitrobenzyl)sulfinyl]phenyl}-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 7.73 (d, J=7.63 Hz, 1H), 7.59 (d, J=8.22 Hz, 1H), 7.43-7.53 (m, 3H), 7.29-7.42 (m, 3H), 7.20 (d, J=7.63 Hz, 1H), 6.97 (t, J=7.63 Hz, 1H), 6.66 (d, J=7.34 Hz, 1H), 6.57 (br. s., 1H), 6.43 (d, J=7.34 Hz, 1H), 4.27 (d, J=12.91 Hz, 1H), 3.99 (d, J=12.91 Hz, 1H).

Compound 80

N-{2-[(3-aminobenzyl)sulfonyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure L, the title compound (75 mg, 82%) was prepared from N-{2-[(3-nitrobenzyl)sulfonyl]phenyl}-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, acetone-d6)) δ 7.75-7.85 (m, 3H), 7.62-7.70 (m, 1H), 7.59 (d, J=8.51 Hz, 1H), 7.56 (dd, J=1.76, 7.92 Hz, 1H), 7.49 (td, J=1.17, 7.92 Hz, 1H), 7.36 (t, J=7.48 Hz, 1H), 7.16-7.22 (m, 1H), 6.83 (t, J=7.78 Hz, 1H), 6.57 (dd, J=1.47, 7.92 Hz, 1H), 6.43 (t, J=1.91 Hz, 1H), 6.15 (d, J=7.34 Hz, 1H), 4.37 (s, 2H).

Intermediate 28

5-chloro-2-((4-nitrobenzyl)thio)aniline

Following General Procedure A, the title compound (624 mg, 92%) was prepared from 2-amino-4-chlorobenzenethiol (555 mg, 3.10 mmol), 1-(bromomethyl)-4-nitrobenzene (490 mg, 2.268 mmol) and K₂CO₃ (1.3 g, 9.50 mmol) in DMF (20 ml).

1H NMR (600 MHz, CD₃OD) δ 8.07 (d, J=8.80 Hz, 2H), 7.30 (d, J=8.80 Hz, 2H), 6.93 (d, J=8.22 Hz, 1H), 6.73 (d, J=2.35 Hz, 1H), 6.43 (dd, J=2.35, 8.22 Hz, 1H), 3.97 (s, 2H).

Compound 81

N-{5-chloro-2-[(4-nitrobenzyl)thio]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure B, the title compound (475 mg, 72%) was prepared from 5-chloro-2-((4-nitrobenzyl)thio)aniline (411 mg, 1.40 mmol) and benzofuran-2-sulfonyl chloride (303 mg, 1.40 mmol) in pyridine (5 ml).

1H NMR (600 MHz, CD₃OD) δ 7.94-8.00 (m, 2H), 7.72 (d, J=7.92 Hz, 1H), 7.50-7.55 (m, 1H), 7.45-7.49 (m, 2H), 7.43 (s, 1H), 7.31-7.38 (m, 1H), 7.11-7.19 (m, 3H), 7.07 (dd, J=2.35, 8.51 Hz, 1H), 3.96 (s, 2H).

Compound 82

N-{5-chloro-2-[(4-nitrobenzyl)sulfonyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound (120 mg, 85%) was prepared from N-{5-chloro-2-[(4-nitrobenzyl)thio]phenyl}-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, acetone-d6) δ 9.59 (br. s., 1H), 8.01 (d, J=7.34 Hz, 2H), 7.86 (s, 1H), 7.76 (d, J=7.92 Hz, 1H), 7.72 (s, 1H), 7.52 (d, J=8.51 Hz, 1H), 7.39-7.49 (m, 2H), 7.25-7.36 (m, 3H), 7.00 (s, 1H), 4.96 (s, 2H).

Compound 83

N-{2-[(4-aminobenzyl)sulfonyl]-5-chlorophenyl}-1-benzofuran-2-sulfonamide

Following General Procedure L, the title compound (68 mg, 81%) was prepared from N-{5-chloro-2-[(4-nitrobenzyl)sulfonyl]phenyl}-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, acetone-d6) δ 7.75-7.88 (m, 3H), 7.61 (d, J=8.51 Hz, 1H), 7.44-7.54 (m, 2H), 7.34-7.41 (m, 1H), 7.22 (dd, J=1.76, 8.51 Hz, 1H), 6.69 (d, J=8.51 Hz, 2H), 6.49 (d, J=8.51 Hz, 2H), 4.38 (s, 2H).

Intermediate 29

5-chloro-2-((2-nitrobenzyl)thio)aniline

Following General Procedure A, the title compound (548 mg, 95%) was prepared from 2-amino-4-chlorobenzenethiol (441 mg, 2.76 mmol), 1-(bromomethyl)-2-nitrobenzene (398 mg, 1.84 mmol) and K₂CO₃ (1.27 g, 9.21 mmol) in DMF (20 ml).

1H NMR (600 MHz, CD₃OD) δ 7.89-7.98 (m, 1H), 7.37-7.46 (m, 2H), 6.99-7.04 (m, 1H), 6.81 (d, J=8.22 Hz, 1H), 6.71 (d, J=2.05 Hz, 1H), 6.37 (dd, J=2.05, 8.22 Hz, 1H), 4.22 (s, 2H).

Compound 84

N-(5-chloro-2-((2-nitrobenzyl)thio)phenyl)benzofuran-2-sulfonamide

Following General Procedure B, the title compound (485 mg, 69%) was prepared from 5-chloro-2-((2-nitrobenzyl)thio)aniline (435 mg, 1.48 mmol) and benzofuran-2-sulfonyl chloride (320 mg, 1.48 mmol) in pyridine (5 ml).

1H NMR (600 MHz, CDCl₃) δ 8.03 (dd, J=1.47, 7.92 Hz, 1H), 7.65-7.71 (m, 2H), 7.48-7.53 (m, 2H), 7.43-7.48 (m, 1H), 7.31-7.42 (m, 3H), 7.03 (d, J=8.22 Hz, 1H), 6.90 (dd, J=2.05, 8.22 Hz, 1H), 6.76 (dd, J=1.32, 7.48 Hz, 1H), 4.16 (s, 2H).

Compound 85

N-{2-[(2-aminobenzyl)thio]-5-chlorophenyl}-1-benzofuran-2-sulfonamide

Following General Procedure L, the title compound (44 mg, 40%) was prepared from N-(5-chloro-2-((2-nitrobenzyl)thio)phenyl)benzofuran-2-sulfonamide.

1H NMR (600 MHz, acetone-d6) δ 7.77 (d, J=7.92 Hz, 1H), 7.59 (dd, J=0.88, 8.51 Hz, 1H), 7.47-7.55 (m, 3H), 7.31-7.41 (m, 2H), 7.10 (dd, J=2.35, 8.51 Hz, 1H), 6.86-6.95 (m, 1H), 6.72 (dd, J=0.88, 7.92 Hz, 1H), 6.57 (dd, J=1.32, 7.48 Hz, 1H), 6.38 (td, J=1.03, 7.41 Hz, 1H), 3.97 (s, 2H).

Compound 86

N-{5-chloro-2-[(2-nitrobenzyl)sulfinyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound (160 mg, 79%) was prepared from N-(5-chloro-2-((2-nitrobenzyl)thio)phenyl)benzofuran-2-sulfonamide.

1H NMR (600 MHz, acetone-d6) δ 7.92 (d, J=8.22 Hz, 1H), 7.71 (dd, J=0.73, 7.78 Hz, 1H), 7.59 (d, J=2.05 Hz, 1H), 7.47 (d, J=8.51 Hz, 1H), 7.39-7.44 (m, 1H), 7.33-7.38 (m, 2H), 7.19-7.30 (m, 2H), 6.71-6.80 (m, 2H), 6.67 (d, J=8.22 Hz, 1H), 5.13 (d, J=12.91 Hz, 2H), 4.73 (d, J=12.62 Hz, 2H).

Compound 87

N-{2-[(2-aminobenzyl)sulfinyl]-5-chlorophenyl}-1-benzofuran-2-sulfonamide

Following General Procedure L, the title compound (67 mg, 50%) was prepared from N-{5-chloro-2-[(2-nitrobenzyl)sulfinyl]phenyl}-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 7.72 (d, J=7.92 Hz, 1H), 7.56 (d, J=7.63 Hz, 1H), 7.44-7.52 (m, 2H), 7.41 (d, J=8.51 Hz, 2H), 7.31-7.37 (m, 1H), 7.28 (d, J=1.47 Hz, 1H), 7.21 (dd, J=1.76, 8.22 Hz, 1H), 7.06-7.13 (m, 1H), 6.88 (d, J=7.92 Hz, 1H), 6.75 (d, J=7.04 Hz, 1H), 6.60-6.67 (m, 1H), 4.50 (d, J=13.50 Hz, 2H), 4.23 (d, J=12.91 Hz, 2H).

Compound 88

N-{2-[(2-aminobenzyl)sulfonyl]-5-chlorophenyl}-1-benzofuran-2-sulfonamide

Following General Procedure D and K, the title compound (52 mg) was prepared from N-(5-chloro-2-((2-nitrobenzyl)thio)phenyl)benzofuran-2-sulfonamide.

1H NMR (300 MHz, CD₃OD) δ 7.69-7.78 (m, 2H), 7.56-7.65 (m, 2H), 7.50-7.55 (m, 1H), 7.45 (td, J=1.17, 7.77 Hz, 1H), 7.28-7.38 (m, 1H), 6.99-7.15 (m, 2H), 6.88 (d, J=7.03 Hz, 1H), 6.67-6.75 (m, 1H), 6.58-6.66 (m, 1H), 4.68 (s, 2H).

Intermediate 30

5-chloro-2-((pyrimidin-2-ylmethyl)thio)aniline

Following General Procedure A, the title compound (284 mg, 39%) was prepared from 2-amino-4-chlorobenzenethiol (529 mg, 3.33 mmol), 2-(chloromethyl)pyrimidine (366 mg, 2.22 mmol) and K₂CO₃ (1.53 g, 11.09 mmol) in DMF (10 ml).

1H NMR (600 MHz, CD₃OD) δ 8.65 (d, J=4.99 Hz, 2H), 7.31 (t, J=4.99 Hz, 1H), 7.03 (d, J=8.22 Hz, 1H), 6.70 (s, 1H), 6.43 (dd, J=2.05, 8.22 Hz, 1H), 4.07 (s, 2H).

Compound 89

N-{5-chloro-2-[(pyrimidin-2-ylmethyl)thio]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure B, the title compound (243 mg, 51%) was prepared from 5-chloro-2-((pyrimidin-2-ylmethyl)thio)aniline (280 mg, 1.11 mmol) and benzofuran-2-sulfonyl chloride (240 mg, 1.11 mmol) in pyridine (3 ml).

1H NMR (600 MHz, acetone-d6) δ 11.69 (br. s., 1H), 8.87 (d, J=4.99 Hz, 2H), 7.74 (dd, J=0.88, 7.92 Hz, 1H), 7.66 (s, 1H), 7.62 (d, J=8.22 Hz, 1H), 7.59 (d, J=0.59

Hz, 1H), 7.45-7.52 (m, 3H), 7.33 (ddd, J=1.76, 6.38, 8.00 Hz, 1H), 7.14 (dd, J=2.20, 8.36 Hz, 1H), 4.24 (s, 2H).

Compound 90

N-{5-chloro-2-[(pyrimidin-2-ylmethyl)sulfinyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound (82 mg) was prepared from N-{5-chloro-2-[(pyrimidin-2-ylmethyl)thio]phenyl}-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 8.68 (dd, J=1.47, 4.99 Hz, 2H), 7.73 (d, J=7.92 Hz, 1H), 7.53-7.60 (m, 2H), 7.45-7.52 (m, 2H), 7.30-7.41 (m, 4H), 4.63 (d, J=13.50 Hz, 1H), 4.46 (d, J=13.50 Hz, 1H).

Compound 91

N-{5-chloro-2-[(pyrimidin-2-ylmethyl)sulfonyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound (60 mg) was prepared from N-{5-chloro-2-[(pyrimidin-2-ylmethyl)thio]phenyl}-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, DMSO-d6) δ 8.68 (dd, J=1.47, 4.99 Hz, 2H), 7.76 (s, 1H), 7.68 (br. s., 1H), 7.61 (d, J=8.22 Hz, 1H), 7.54-7.58 (m, 2H), 7.46 (t, J=7.34 Hz, 1H), 7.41 (t, J=4.84 Hz, 1H), 7.30-7.37 (m, 1H), 7.19 (d, J=7.92 Hz, 1H), 5.11-5.19 (m, 2H).

General Procedure M

Intermediate 31

4-mercapto-3-nitrobenzonitrile

To a solution of 4-chloro-3-nitrobenzonitrile (530 mg, 2.88 mmol) in dioxane (5 ml)/water (1 ml) was added Na₂S.9H₂O 9692 mg, 2.88 mmol). After it was stirred at room temperature for 2 hours, the reaction was quenched with HCl (1N). The mixture was extracted with EtOAc (2×50 ml). The organic layer was washed with water, brine, dried over Na₂SO₄ and concentrated in vacuo. The title compound was purified by silica gel column chromatography (0→30% EtOAc in hexane).

1H NMR (600 MHz, acetone-d6) δ 8.67 (d, J=1.76 Hz, 1H), 8.01 (s, 1H), 7.93 (dd, J=1.76, 8.51 Hz, 1H), 5.30 (s, 1H).

Intermediate 32

4-(benzylthio)-3-nitrobenzonitrile

Following General Procedure A, the title compound (580 mg, 82%) was prepared from 4-mercapto-3-nitrobenzonitrile (473 mg, 2.63 mmol), (bromomethyl)benzene (449 mg, 2.63 mmol), K₂CO₃ (1.81 g, 13.14 mmol) in DMF (10 ml).

1H NMR (600 MHz, DMSO-d₆) δ 8.68 (d, J=1.76 Hz, 1H), 8.10 (dd, J=1.47, 8.51 Hz, 1H), 7.88 (d, J=8.51 Hz, 1H), 7.43 (d, J=7.34 Hz, 2H), 7.34 (t, J=7.63 Hz, 2H), 7.25-7.30 (m, 1H), 4.44 (s, 2H).

Intermediate 33

3-amino-4-(benzylthio)benzonitrile

Following General Procedure L, the title compound (372 mg, 81%) was prepared from 4-(benzylthio)-3-nitrobenzonitrile (518 mg, 1.92 mmol).

1H NMR (600 MHz, CD₃OD) δ 7.11-7.25 (m, 6H), 6.96 (d, J=1.76 Hz, 1H), 6.71-6.78 (m, 1H), 4.00 (s, 2H).

Compound 92

N-[2-(benzylthio)-5-cyanophenyl]-1-benzofuran-2-sulfonamide

Following General Procedure B, the title compound (419 mg, 65%) was prepared from 3-amino-4-(benzylthio)benzonitrile (370 mg, 1.54 mmol) and benzofuran-2-sulfonyl chloride (333 mg, 1.54 mmol) in pyridine (3 ml).

1H NMR (600 MHz, CD₃OD) δ 7.73 (d, J=8.51 Hz, 1H), 7.65 (d, J=1.17 Hz, 1H), 7.50-7.56 (m, 2H), 7.48 (dd, J=1.47, 8.22 Hz, 1H), 7.39 (ddd, J=2.05, 6.16, 7.92 Hz, 1H), 7.31-7.36 (m, 2H), 7.09-7.20 (m, 3H), 6.92 (d, J=7.04 Hz, 2H), 3.97 (s, 2H).

Compound 93

N-[2-(benzylsulfinyl)-5-cyanophenyl]-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound (109 mg) was prepared from N-[2-(benzylthio)-5-cyanophenyl]-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 7.74 (d, J=7.63 Hz, 1H), 7.66 (s, 1H), 7.53 (d, J=8.51 Hz, 1H), 7.50 (s, 1H), 7.45 (t, J=7.48 Hz, 1H), 7.30-7.39 (m, 2H), 7.28 (d, J=7.92 Hz, 1H), 7.20-7.25 (m, 1H), 7.16 (t, J=7.48 Hz, 2H), 6.96 (d, J=7.34 Hz, 2H), 4.47 (d, J=13.21 Hz, 1H), 4.21 (d, J=12.91 Hz, 1H).

Compound 94

N-[2-(benzylsulfonyl)-5-cyanophenyl]-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound (230 mg) was prepared from N-[2-(benzylthio)-5-cyanophenyl]-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 7.97 (d, J=1.47 Hz, 1H), 7.68 (d, J=7.63 Hz, 1H), 7.52 (d, J=8.22 Hz, 1H), 7.43 (s, 1H), 7.32-7.38 (m, 2H), 7.24-7.30 (m, 1H), 7.09-7.18 (m, 3H), 6.98-7.06 (m, 2H), 6.87 (dd, J=1.47, 8.22 Hz, 1H), 5.05 (s, 2H).

Compound 95

4-chloro-N-[5-chloro-2-(methylsulfonyl)phenyl]-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure B and D, the title compound was prepared from 5-chloro-2-(methylthio)aniline and 4-chloro-3-(trifluoromethyl)benzene-1-sulfonyl chloride.

1H NMR (300 MHz, CD₃OD) δ 8.26 (s, 1H), 8.11 (d, J=8.50 Hz, 1H), 7.74-7.87 (m, 2H), 7.58 (d, J=1.47 Hz, 1H), 7.16 (d, J=8.50 Hz, 1H), 3.19 (s, 3H).

Compound 96

4-chloro-N-[5-chloro-2-(methylthio)phenyl]-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure B, the title compound was prepared from 5-chloro-2-(methylthio)aniline and 4-chloro-3-(trifluoromethyl)benzene-1-sulfonyl chloride.

1H NMR (300 MHz, CDCl₃) δ 8.13 (d, J=1.47 Hz, 1H), 7.88 (dd, J=1.90, 8.35 Hz, 1H), 7.60 (dd, J=2.64, 12.60 Hz, 2H), 7.28 (d, J=8.50 Hz, 1H), 7.10 (dd, J=2.05, 8.50 Hz, 1H), 2.21 (s, 3H).

Compound 97

4-chloro-N-[5-chloro-2-(isopropylthio)phenyl]-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure A and B, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 2-iodo-propane, and 4-chloro-3-(trifluoromethyl)benzene-1-sulfonyl chloride.

1H NMR (300 MHz, CD₃OD) δ 8.13 (d, J=1.47 Hz, 1H), 7.92 (dd, J=2.05, 8.50 Hz, 1H), 7.76 (d, J=8.50 Hz, 1H), 7.53 (d, J=2.05 Hz, 1H), 7.33 (d, J=8.50 Hz, 1H), 7.15-7.23 (m, 1H), 3.03-3.21 (m, 1H), 1.06 (d, J=6.45 Hz, 6H).

Compound 98

4-chloro-N-{5-chloro-2-[(2-hydroxyethyl)thio]phenyl}-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure A and B, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 2-bromo-ethanol, and 4-chloro-3-(trifluoromethyl)benzene-1-sulfonyl chloride.

1H NMR (300 MHz, CD₃OD) δ 8.09 (d, J=1.47 Hz, 1H), 7.92 (dd, J=1.90, 8.35 Hz, 1H), 7.76 (d, J=8.50 Hz, 1H), 7.51 (d, J=2.34 Hz, 1H), 7.41 (d, J=8.50 Hz, 1H), 7.20 (dd, J=2.20, 8.35 Hz, 1H), 3.49 (t, J=6.15 Hz, 2H), 2.80 (t, J=6.15 Hz, 2H).

Compound 99

4-chloro-N-[5-chloro-2-(isopropylsulfinyl)phenyl]-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure C, the title compound (55 mg) was prepared from 4-chloro-N-[5-chloro-2-(isopropylthio)phenyl]-3-(trifluoromethyl)benzenesulfonamide.

Compound 100

4-chloro-N-{5-chloro-2-[(2-hydroxyethyl)sulfinyl]phenyl}-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure C, the title compound (109 mg) was prepared from 4-chloro-N-{5-chloro-2-[(2-hydroxyethyl)thio]phenyl}-3-(trifluoromethyl)benzenesulfonamide.

1H NMR (300 MHz, CD₃OD) δ 8.09 (d, J=1.17 Hz, 1H), 7.96-8.03 (m, 1H), 7.84 (d, J=8.20 Hz, 1H), 7.71 (d, J=8.50 Hz, 1H), 7.44 (dd, J=1.76, 8.50 Hz, 1H), 7.21 (d, J=1.76 Hz, 1H), 3.98 (td, J=4.10, 8.06 Hz, 1H), 3.77-3.88 (m, 1H), 3.19 (ddd, J=5.27, 8.42, 13.26 Hz, 1H), 2.95-3.06 (m, 1H).

Compound 101

4-chloro-N-{5-chloro-2-[(2-hydroxyethyl)sulfonyl]phenyl}-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure D, the title compound was prepared from 4-chloro-N-{5-chloro-2-[(2-hydroxyethyl)thio]phenyl}-3-(trifluoromethyl)benzenesulfonamide.

1H NMR (600 MHz, CD₃OD) δ 8.27 (d, J=1.47 Hz, 1H), 8.11 (dd, J=2.05, 8.51 Hz, 1H), 7.74 (dd, J=8.51, 14.97 Hz, 2H), 7.54-7.59 (m, 1H), 6.96-7.08 (m, 1H), 3.82 (t, J=6.02 Hz, 2H), 3.57-3.68 (m, 2H).

Compound 102

methyl 3-{([4-chloro-2-({[4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfinyl}propanoate

Following General Procedure H, B, and C, the title compound was prepared from 2-amino-4-chlorobenzenethiol.

1H NMR (300 MHz, CD₃OD) δ 8.09 (s, 1H), 7.99 (dd, J=1.76, 8.50 Hz, 1H), 7.85 (d, J=8.20 Hz, 1H), 7.71 (d, J=8.50 Hz, 1H), 7.47 (dd, J=1.61, 8.35 Hz, 1H), 7.11 (d, J=1.76 Hz, 1H), 3.63 (s, 3H), 3.24-3.39 (m, 1H), 3.08-3.22 (m, 1H), 2.54-2.82 (m, 2H).

Compound 103

4-chloro-N-{5-chloro-2-[(pyridin-2-ylmethyl)thio]phenyl}-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure A and B, the title compound was prepared from 2-amino-4-chlorobenzenethiol.

1H NMR (600 MHz, CD₃OD) δ 8.63 (d, J=3.81 Hz, 1H), 8.03 (d, J=2.35 Hz, 1H), 7.87 (dd, J=2.20, 8.36 Hz, 1H), 7.75 (td, J=1.76, 7.63 Hz, 1H), 7.70 (d, J=8.51 Hz, 1H), 7.54 (d, J=2.35 Hz, 1H), 7.37 (d, J=8.51 Hz, 1H), 7.32-7.35 (m, 1H), 7.21 (d, J=7.63 Hz, 1H), 7.13 (dd, J=2.35, 8.22 Hz, 1H), 4.00 (s, 2H).

Compound 104

4-chloro-N-{5-chloro-2-[(pyridin-3-ylmethyl)thio]phenyl}-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure A and B, the title compound was prepared from 2-amino-4-chlorobenzenethiol.

1H NMR (600 MHz, CD₃OD) δ 8.38 (d, J=3.82 Hz, 1H), 8.25 (br. s., 1H), 8.11 (d, J=2.35 Hz, 1H), 7.93 (dd, J=2.05, 8.51 Hz, 1H), 7.78 (d, J=8.51 Hz, 1H), 7.60 (dt, J=1.91, 7.92 Hz, 1H), 7.39 (d, J=2.35 Hz, 1H), 7.33 (dd, J=4.84, 7.78 Hz, 1H), 7.20 (d, J=8.51 Hz, 1H), 7.14 (s, J=2.35, 2.35, 8.51, 8.51 Hz, 1H), 3.95 (s, 2H).

Compound 105

4-chloro-N-{5-chloro-2-[(pyridin-2-ylmethyl)sulfinyl]phenyl}-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure C, the title compound was prepared from 4-chloro-N-{5-chloro-2-[(pyridin-2-ylmethyl)thio]phenyl}-3-(trifluoromethyl)benzenesulfonamide.

1H NMR (600 MHz, DMSO-d6) δ 8.44 (d, J=4.40 Hz, 1H), 8.03 (d, J=2.05 Hz, 1H), 7.98 (dd, J=2.05, 8.22 Hz, 1H), 7.88 (d, J=8.22 Hz, 1H), 7.74 (t, 1H), 7.25-7.33 (m, 2H), 7.20 (d, J=7.63 Hz, 1H), 7.14 (br. s., 1H), 7.03 (d, J=1.47 Hz, 1H), 4.49 (d, J=12.62 Hz, 1H), 4.06 (d, J=12.91 Hz, 1H).

Compound 106

4-chloro-N-{5-chloro-2-[(pyridin-3-ylmethyl)sulfinyl]phenyl}-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure C, the title compound was prepared from 4-chloro-N-{5-chloro-2-[(pyridin-3-ylmethyl)thio]phenyl}-3-(trifluoromethyl)benzenesulfonamide.

1H NMR (600 MHz, CD₃OD) δ 8.35 (dd, J=1.61, 4.84 Hz, 1H), 8.24 (d, J=2.35 Hz, 1H), 8.07 (d, J=2.05 Hz, 1H), 8.03 (d, J=1.76 Hz, 1H), 7.71 (d, J=8.51 Hz, 1H), 7.38 (s, 1H), 7.27 (d, J=2.05 Hz, 1H), 7.23-7.26 (m, 1H), 6.75 (d, J=8.22 Hz, 1H), 6.65 (dd, J=1.91, 8.36 Hz, 1H), 4.45 (d, J=13.50 Hz, 1H), 4.37 (d, J=13.21 Hz, 1H).

General Procedure N

Intermediate 34

4-Chloro-N-(5-chloro-2-mercapto-phenyl)-3-trifluoromethyl-benzenesulfonamide

To a solution of N,N′-[dithiobis(5-chloro-2,1-phenylene)]bis[4-chloro-3-(trifluoromethyl)benzenesulfonamide] Intermediate 5 (106 mg, 0.13 mmol) in THF (3 ml) at 0° C. was added NaBH₄ (20 mg, 0.53 mmol), the mixture was stirred at room temperature for 1 h, diluted with H₂O, acidified carefully with 6 M HCl, extracted with EtOAc. The organic layer was washed with brine, dried over Na₂SO₄, and concentrated in vacuo to yield 109 mg off-white solid as the title compound.

¹H NMR (600 MHz, METHANOL-d₄) δ 8.05 (s, 1H), 7.91 (d, J=8.51 Hz, 1H), 7.78 (d, J=8.51 Hz, 1H), 7.30 (dd, J=1.47, 8.22 Hz, 1H), 7.23-7.25 (m, 1H), 7.14 (dd, J=2.20, 8.36 Hz, 1H).

Compound 107

ethyl {[4-chloro-2-({[4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfinyl}acetate

Following General Procedure A and C, the title compound was prepared from 4-Chloro-N-(5-chloro-2-mercapto-phenyl)-3-trifluoromethyl-benzenesulfonamide Intermediate 34 and ethyl 2-bromoacetate.

1H NMR (300 MHz, CD₃OD) δ 8.06 (s, 1H), 7.96 (d, J=8.50 Hz, 1H), 7.84 (dd, J=8.50, 10.84 Hz, 2H), 7.52 (dd, J=1.61, 8.64 Hz, 1H), 7.06 (d, J=1.47 Hz, 1H), 4.17 (q, J=7.23 Hz, 2H), 4.06 (d, J=14.65 Hz, 1H), 3.88 (d, J=14.36 Hz, 1H), 1.22 (t, J=7.18 Hz, 3H).

General Procedure 0

Intermediate 35

4-Chloro-N-[5-chloro-2-(3-oxo-cyclopentylsulfanyl)-phenyl]-3-trifluoromethyl-benzenesulfonamide

To a solution of N,N′-[dithiobis(5-chloro-2,1-phenylene)]bis[4-chloro-3-(trifluoromethyl)benzenesulfonamide] Intermediate 5 (105 mg, 0.13 mmol) in CH₂Cl₂ (2 ml), MeOH (0.5 ml), and H₂O (0.25 ml) was added polymer-bound triphenylphosphine (˜3 mmol/g triphenylphosphine loading, 87 mg, 0.26 mmol), cyclopent-2-enone (33 μl, 0.39 mmol), and PTSA (catalytic amount). The reaction was stirred at room temperature for 4 h and was directly purified by column chromatography on silica gel (0→100% ethyl acetate in hexane) to yield the title compound as an off-white solid (133 mg, 100%).

¹H NMR (600 MHz, CHLOROFORM-d) δ 8.16 (d, J=2.35 Hz, 1H), 7.93 (dd, J=2.35, 8.51 Hz, 1H), 7.89 (s, 1H), 7.62-7.65 (m, 2H), 7.35 (d, J=8.22 Hz, 1H), 7.07 (dd, J=2.20, 8.36 Hz, 1H), 3.46 (quin, J=6.53 Hz, 1H), 2.44-2.49 (m, 1H), 2.38-2.44 (m, 1H), 2.21 (s, 2H), 2.05-2.11 (m, 1H), 1.84-1.90 (m, 1H).

Compound 108

4-chloro-N-{5-chloro-2-[(3-hydroxycyclopentyl)sulfinyl]phenyl}-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure D, followed by treatment of the crude product with NaBH₄ in MeOH, the title compound was prepared from 4-Chloro-N-[5-chloro-2-(3-oxo-cyclopentylsulfanyl)-phenyl]-3-trifluoromethyl-benzenesulfonamide (Intermediate 35).

1H NMR (600 MHz, CD₃OD) δ 8.13 (d, J=2.05 Hz, 1H), 7.99 (dd, J=2.20, 8.36 Hz, 1H), 7.73 (d, J=8.51 Hz, 1H), 7.46 (d, J=8.51 Hz, 1H), 7.34 (d, J=2.05 Hz, 1H), 7.06 (dd, J=2.05, 8.51 Hz, 1H), 4.17-4.22 (m, 1H), 3.70-3.77 (m, 1H), 2.19-2.26 (m, 1H), 1.90-2.00 (m, 1H), 1.78-1.86 (m, 1H), 1.62-1.76 (m, 2H), 1.29-1.38 (m, 1H).

Compound 109

4-chloro-N-[5-chloro-2-(ethylsulfonyl)phenyl]-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure D, the title compound was prepared from 4-chloro-N-[5-chloro-2-(ethylthio)phenyl]-3-(trifluoromethyl)benzenesulfonamide.

1H NMR (600 MHz, CD₃OD) δ 8.30 (d, J=1.76 Hz, 1H), 8.14 (dd, J=2.20, 8.36 Hz, 1H), 7.72-7.80 (m, 2H), 7.64 (d, J=2.05 Hz, 1H), 7.10 (br. s., 1H), 3.30-3.38 (m, 2H), 1.09 (t, J=7.34 Hz, 3H)

Compound 110

2-{[4-chloro-2-({[4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]thio}-N,N-dimethylacetamide

Following General Procedure G, the title compound was prepared from N,N′-[dithiobis(5-chloro-2,1-phenylene)]bis[4-chloro-3-(trifluoromethyl)benzenesulfonamide] Intermediate 5 and 2-chloro-N,N-dimethyl-acetamide.

1H NMR (600 MHz, CD₃OD) δ 8.09 (d, J=2.35 Hz, 1H), 7.94 (dd, J=2.05, 8.51 Hz, 1H), 7.76 (d, J=8.22 Hz, 1H), 7.47-7.50 (m, 2H), 7.18 (dd, J=2.35, 8.51 Hz, 1H), 3.68 (s, 2H), 2.97 (s, 3H), 2.93 (s, 3H).

Compound 111

2-{[4-chloro-2-({[4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]thio}-N-methylacetamide

Following General Procedure G, the title compound was prepared from N,N′-[dithiobis(5-chloro-2,1-phenylene)]bis[4-chloro-3-(trifluoromethyl)benzenesulfonamide] Intermediate 5 and 2-chloro-N-methyl-acetamide.

1H NMR (600 MHz, CD₃OD) δ 8.09 (d, J=2.35 Hz, 1H), 7.93 (dd, J=2.35, 8.51 Hz, 1H), 7.76 (d, J=8.51 Hz, 1H), 7.48 (d, J=2.35 Hz, 1H), 7.44 (d, J=8.22 Hz, 1H), 7.20 (dd, J=2.35, 8.51 Hz, 1H), 3.40 (s, 2H), 2.69 (s, 3H).

Compound 112

2-{[4-chloro-2-({([4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfinyl}-N,N-dimethylacetamide

Following General Procedure C, the title compound was prepared from 2-{[4-chloro-2-({[4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]thio}-N,N-dimethylacetamide.

1H NMR (600 MHz, CD₃OD) δ 8.16 (d, J=2.35 Hz, 1H), 8.01 (dd, J=2.05, 8.22 Hz, 1H), 7.68 (d, J=8.51 Hz, 1H), 7.45 (d, J=8.51 Hz, 1H), 7.28 (d, J=1.76 Hz, 1H), 6.90 (dd, J=2.05, 8.22 Hz, 1H), 4.65-4.71 (m, 1H), 3.51-3.57 (m, 1H), 3.11 (s, 3H), 2.98 (s, 3H).

Compound 113

2-{[4-chloro-2-({[4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfonyl}-N,N-dimethylacetamide

Following General Procedure D, the title compound was prepared from 2-{[4-chloro-2-({[4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]thio}-N,N-dimethylacetamide.

¹H NMR (600 MHz, CD₃OD) δ 8.29 (d, J=2.05 Hz, 1H), 8.09-8.14 (m, 1H), 7.72 (d, J=8.51 Hz, 1H), 7.68 (d, J=8.51 Hz, 1H), 7.48 (d, J=1.76 Hz, 1H), 6.81 (d, J=8.22 Hz, 1H), 3.16 (s, 3H), 3.00 (s, 3H).

Compound 114

2-{[4-chloro-2-({[4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfinyl}-N-methylacetamide

Following General Procedure C, the title compound was prepared from 2-{[4-chloro-2-({[4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]thio}-N-methylacetamide.

¹H NMR (600 MHz, CD₃OD) δ 8.15 (d, J=2.05 Hz, 1H), 8.01 (dd, J=2.20, 8.36 Hz, 1H), 7.72 (d, J=8.51 Hz, 1H), 7.51 (d, J=8.22 Hz, 1H), 7.22 (d, J=2.05 Hz, 1H), 7.02 (dd, J=1.91, 8.36 Hz, 1H), 4.21 (d, J=13.50 Hz, 1H), 3.49 (d, J=13.21 Hz, 1H), 2.76 (s, 3H)

Compound 115

2-{[4-chloro-2-({[4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfonyl}-N-methylacetamide

Following General Procedure D, the title compound was prepared from 2-{[4-chloro-2-({[4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]thio}-N-methylacetamide.

¹H NMR (600 MHz, CD₃OD) δ 8.29 (d, J=2.05 Hz, 1H), 8.09-8.13 (m, 1H), 7.69 (d, J=8.51 Hz, 1H), 7.66 (d, J=8.22 Hz, 1H), 7.44 (d, J=2.05 Hz, 1H), 6.75 (dd, J=1.91, 8.66 Hz, 1H), 2.77 (s, 3H).

Compound 116

N-{2-[(2-aminoethyl)thio]-5-chlorophenyl}-4-chloro-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure G, the title compound was prepared from N,N′-[dithiobis(5-chloro-2,1-phenylene)]bis[4-chloro-3-(trifluoromethyl)benzenesulfonamide] Intermediate 5 and 2-bromo-ethylamine hydrobromide.

¹H NMR (600 MHz, CD₃OD) δ 8.18 (d, J=2.05 Hz, 1H), 7.99 (dd, J=2.05, 8.22 Hz, 1H), 7.65 (d, J=8.51 Hz, 1H), 7.38 (d, J=8.22 Hz, 1H), 7.30 (d, J=2.35 Hz, 1H), 6.72 (dd, J=2.35, 8.22 Hz, 1H), 2.96-3.05 (m, 4H).

Compound 117

N-{2-[(2-aminoethyl)sulfonyl]-5-chlorophenyl}-4-chloro-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure D, followed by treatment of the crude product with excess zinc dust in MeOH, aqueous NH₄Cl and HOAc at room temperature for 2 h, the title compound was prepared from N-{2-[(2-aminoethyl)thio]-5-chlorophenyl}-4-chloro-3-(trifluoromethyl)benzenesulfonamide.

¹H NMR (600 MHz, CD₃OD) δ 8.27 (d, J=2.05 Hz, 1H), 8.10 (dd, J=1.91, 8.36 Hz, 1H), 7.74 (d, J=8.51 Hz, 1H), 7.67 (d, J=8.51 Hz, 1H), 7.42 (d, J=1.76 Hz, 1H), 6.80 (dd, J=2.05, 8.51 Hz, 1H), 3.88-3.92 (m, 2H), 3.45-3.51 (m, 2H).

Compound 118

N-{2-[(2-aminoethyl)sulfinyl]-5-chlorophenyl}-4-chloro-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure C, the title compound was prepared from N-{2-[(2-aminoethyl)thio]-5-chlorophenyl}-4-chloro-3-(trifluoromethyl)benzenesulfonamide. ¹H NMR (300 MHz, CD₃OD) δ 8.15 (d, J=1.76 Hz, 1H), 8.00 (dd, J=1.90, 8.35 Hz, 1H), 7.69 (d, J=8.21 Hz, 1H), 7.46 (d, J=8.50 Hz, 1H), 7.25 (d, J=2.05 Hz, 1H), 6.94 (dd, J=1.90, 8.35 Hz, 1H), 3.53-3.67 (m, 1H), 3.36-3.50 (m, 1H), 3.17-3.31 (m, 2H).

Compound 119

3-({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)-N,N-dimethylpropanamide

Following General Procedure O, the title compound was prepared from N,N′-[dithiobis(5-chloro-2,1-phenylene)]bis(1-benzofuran-2-sulfonamide) Intermediate 8 and N,N-dimethyl-acrylamide.

¹H NMR (600 MHz, CD₃OD) δ 7.69 (d, J=7.92 Hz, 1H), 7.53-7.56 (m, 1H), 7.45-7.49 (m, 2H), 7.39 (s, 1H), 7.37 (d, J=8.51 Hz, 1H), 7.31-7.35 (m, 1H), 7.17-7.20 (m, 1H), 2.90 (t, J=7.19 Hz, 2H), 2.87 (s, 3H), 2.85 (s, 3H), 2.33 (t, J=7.19 Hz, 2H).

Compound 120

3-({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}sulfinyl)-N,N-dimethylpropanamide

Following General Procedure C, the title compound was prepared from 3-({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)-N,N-dimethylpropanamide.

¹H NMR (600 MHz, CD₃OD) δ 7.72 (d, J=7.34 Hz, 1H), 7.64 (d, J=8.22 Hz, 1H), 7.58 (d, J=8.51 Hz, 1H), 7.46-7.51 (m, 1H), 7.46 (s, 1H), 7.39 (d, J=1.76 Hz, 1H), 7.32-7.37 (m, 2H), 3.27-3.34 (m, 1H), 3.16-3.24 (m, 1H), 2.96 (s, 3H), 2.90 (s, 3H), 2.77-2.86 (m, 1H), 2.59-2.66 (m, 1H).

Compound 121

3-({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}sulfonyl)-N,N-dimethylpropanamide

Following General Procedure D, the title compound was prepared from 3-({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)-N,N-dimethylpropanamide.

¹H NMR (300 MHz, CD₃OD) δ 7.59-7.75 (m, 3H), 7.40-7.49 (m, 1H), 7.30-7.41 (m, 1H), 7.20-7.30 (m, 2H), 6.79 (dd, J=1.76, 8.50 Hz, 1H), 3.94 (t, J=7.47 Hz, 2H), 2.87 (s, 3H), 2.81 (s, 3H), 2.59 (t, J=7.47 Hz, 2H).

Compound 122

N-(2-{[(6-amino-1-oxidopyridin-2-yl)methyl]sulfonyl}-5-chlorophenyl)-1-benzofuran-2-sulfonamide

Following General Procedure D and E, the title compound was prepared from tert-butyl {6-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)methyl]pyridin-2-yl}carbamate.

¹H NMR (300 MHz, CD₃OD) δ 7.77 (d, J=1.76 Hz, 1H), 7.59-7.71 (m, 2H), 7.29-7.44 (m, 3H), 7.20-7.29 (m, 1H), 7.10 (t, J=7.91 Hz, 1H), 6.77-6.88 (m, 2H), 6.57 (d, J=7.33 Hz, 1H), 5.41 (br. s., 2H), 4.57 (br. s., 1H).

General Procedure P

Compound 123

N-(2-{[4-chloro-2-({[4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfonyl}ethyl)acetamide

To a solution of N-{2-[(2-aminoethyl)sulfonyl]-5-chlorophenyl}-4-chloro-3-(trifluoromethyl)benzenesulfonamide (23 mg, 0.048 mmol) in CH₂Cl₂ (2 ml) was added Et₃N (14 μl, 0.10 mmol), acetic anhydride (5 μl, 0.053 mmol), and catalytic amount of DMAP. The reaction was stirred at room temperature for 1 h and was concentrated. The crude product was purified by column chromatography on silica gel (0→10% MeOH in ethyl acetate), followed by PTLC (10% MeOH in ethyl acetate) to give the title compound.

¹H NMR (600 MHz, CD₃OD) δ 8.29 (d, J=2.05 Hz, 1H), 8.13 (dd, J=2.05, 8.51 Hz, 1H), 7.65-7.75 (m, 2H), 7.51 (d, J=2.05 Hz, 1H), 6.82 (dd, J=2.05, 8.51 Hz, 1H), 3.75 (t, J=6.60 Hz, 2H), 3.51 (t, J=6.60 Hz, 2H), 1.86 (s, 3H).

Compound 124

N-(2-{[4-chloro-2-({[4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfinyl}ethyl)acetamide

Following General Procedure P and C, the title compound was prepared from N-{2-[(2-aminoethyl)thio]-5-chlorophenyl}-4-chloro-3-(trifluoromethyl)benzenesulfonamide.

¹H NMR (600 MHz, CD₃OD) δ 8.12 (s, 1H), 8.01 (dd, J=1.91, 8.36 Hz, 1H), 7.77 (d, J=8.51 Hz, 1H), 7.56 (d, J=8.22 Hz, 1H), 7.17 (s, 1H), 7.13 (d, J=7.63 Hz, 1H), 3.60-3.71 (m, 1H), 3.44-3.54 (m, 1H), 3.33-3.42 (m, 1H), 3.04-3.15 (m, 1H), 1.98 (s, 3H).

Intermediate 36

4-Chloro-N,N-dimethyl-butyramide

To a solution of 4-chloro-butyryl chloride (1.12 ml, 10.0 mmol) and dimethyl-amine hydrochloride (4.1 g, 50.0 mmol) in THF at 5° C. was added 2M NaOH (30 ml, 60.0 mmol) dropwise over 30 minutes while maintaining reaction temperature between 5-10° C. The reaction was stirred for additional 1.5 h and was concentrated, extracted with EtOAc (×2). The combined organic layer was washed with 1M HCl (×2), brine, dried over Na₂SO₄, and concentrated in vacuo to yield the title compound as colorless oil (1.5 g, ˜100%). The crude was used without further purification.

Compound 125

4-({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}sulfinyl)-N,N-dimethylbutanamide

Following General Procedure G and C, the title compound was prepared from N,N′-[dithiobis(5-chloro-2,1-phenylene)]bis(1-benzofuran-2-sulfonamide) Intermediate 8 and 4-chloro-N,N-dimethyl-butyramide.

¹H NMR (300 MHz, CD₃OD) δ 7.68 (d, J=7.62 Hz, 1H), 7.53 (d, J=2.05 Hz, 1H), 7.35-7.49 (m, 3H), 7.32 (d, J=0.88 Hz, 1H), 7.25-7.32 (m, 1H), 6.95 (dd, J=2.05, 8.20 Hz, 1H), 3.33-3.49 (m, 1H), 2.98 (s, 3H), 2.91-3.08 (m, 1H), 2.90 (s, 3H), 2.38-2.57 (m, 2H), 1.92-2.09 (m, 2H).

Compound 126

4-({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}sulfonyl)-N,N-dimethylbutanamide

Following General Procedure G and D, the title compound was prepared from N,N′-[dithiobis(5-chloro-2,1-phenylene)]bis(1-benzofuran-2-sulfonamide) Intermediate 8 and 4-chloro-N,N-dimethyl-butyramide.

¹H NMR (600 MHz, CD₃OD) δ 7.76 (s, 1H), 7.74 (d, J=8.51 Hz, 1H), 7.70 (d, J=7.92 Hz, 1H), 7.38-7.48 (m, 3H), 7.31 (t, J=7.34 Hz, 1H), 6.86-7.05 (m, 1H), 3.46-3.69 (m, 2H), 2.97 (s, 3H), 2.91 (s, 3H), 2.43-2.59 (m, 2H), 1.93-2.09 (m, 2H).

Compound 127

5-chloro-N-[5-chloro-2-(methylsulfinyl)phenyl]-1-benzofuran-2-sulfonamide

Following General Procedure B and C, the title compound was prepared from 5-chloro-2-(methylthio)aniline and 5-chloro-benzofuran-2-sulfonyl chloride (CAS #: 128852-02-8) (Bioorganic & Medicinal Chemistry 13 (2005) 3927-3954).

¹H NMR (300 MHz, CDCl₃) δ 11.00 (br. s., 1H), 7.80 (d, J=1.47 Hz, 1H), 7.68 (d, J=1.76 Hz, 1H), 7.40-7.54 (m, 3H), 7.05-7.16 (m, 2H), 2.91 (s, 3H).

Compound 128

5-chloro-N-[5-chloro-2-(methylsulfonyl)phenyl]-1-benzofuran-2-sulfonamide

Following General Procedure B and D, the title compound was prepared from 5-chloro-2-(methylthio)aniline and 5-chloro-benzofuran-2-sulfonyl chloride (CAS #: 128852-02-8) (Bioorganic & Medicinal Chemistry 13 (2005) 3927-3954).

¹H NMR (600 MHz, CD₃OD) δ 7.74 (s, 1H), 7.74 (d, J=5.58 Hz, 1H), 7.64 (d, J=1.76 Hz, 1H), 7.43 (d, J=8.80 Hz, 1H), 7.30-7.35 (m, 2H), 6.88 (dd, J=2.05, 8.51 Hz, 1H), 3.33 (s, 3H).

Compound 129

N-{5-chloro-2-[(1H-pyrazol-3-ylmethyl)sulfinyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure C and E, the title compound was prepared from tert-butyl 3-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)methyl]-1H-pyrazole-1-carboxylate (Compound 22).

¹H NMR (600 MHz, CD₃OD) δ 7.67 (d, J=7.63 Hz, 1H), 7.42-7.47 (m, 2H), 7.41 (d, J=2.05 Hz, 1H), 7.37 (td, J=1.47, 7.78 Hz, 1H), 7.32 (d, J=0.88 Hz, 1H), 7.28 (td, J=0.88, 7.48 Hz, 1H), 7.22 (d, J=8.51 Hz, 1H), 6.96 (dd, J=1.76, 8.51 Hz, 1H), 5.92 (s, 1H), 4.56 (d, J=13.50 Hz, 1H), 4.28 (d, J=13.50 Hz, 1H).

Compound 130

N-[5-chloro-2-(methylsulfinyl)phenyl]-4-isopropylbenzenesulfonamide

Following General Procedure B and C, the title compound was prepared from 5-chloro-2-(methylthio)aniline and 4-isopropyl-benzenesulfonyl chloride.

¹H NMR (600 MHz, CHLOROFORM-d) δ 10.42 (br. s., 1H), 7.80-7.86 (m, 2H), 7.68 (s, 1H), 7.35 (s, 2H), 7.05-7.08 (m, 1H), 7.01-7.03 (m, 1H), 2.94 (spt, J=6.90 Hz, 1H), 2.69 (s, 3H), 1.22 (d, J=7.04 Hz, 6H).

Compound 131

4-bromo-N-[5-chloro-2-(methylthio)phenyl]benzenesulfonamide

Following General Procedure B, the title compound was prepared from 5-chloro-2-(methylthio)aniline and 4-bromo-benzenesulfonyl chloride.

¹H NMR (600 MHz, CHLOROFORM-d) δ 7.65-7.68 (m, 2H), 7.61-7.63 (m, 2H), 7.58-7.60 (m, 2H), 7.29 (d, J=8.22 Hz, 1H), 7.04 (dd, J=2.20, 8.36 Hz, 1H), 2.17 (s, 3H).

Compound 132

N-[5-chloro-2-(methylthio)phenyl]-4-iodobenzenesulfonamide

Following General Procedure B, the title compound was prepared from 5-chloro-2-(methylthio)aniline and 4-iodo-benzenesulfonyl chloride.

¹H NMR (600 MHz, CHLOROFORM-d) δ 7.80 (d, J=8.80 Hz, 2H), 7.62-7.64 (m, 1H), 7.61 (d, J=2.05 Hz, 1H), 7.49-7.53 (m, 2H), 7.30 (d, J=8.22 Hz, 1H), 7.04 (dd, J=2.20, 8.36 Hz, 1H), 2.17 (s, 3H).

Compound 133

4-bromo-N-[5-chloro-2-(methylsulfinyl)phenyl]benzenesulfonamide

Following General Procedure C, the title compound was prepared from 4-bromo-N-[5-chloro-2-(methylthio)phenyl]benzenesulfonamide.

¹H NMR (600 MHz, CHLOROFORM-d) δ 10.63-10.77 (m, 1H), 7.79-7.82 (m, 2H), 7.64-7.68 (m, 3H), 7.05 (dd, J=1.17, 2.35 Hz, 2H), 2.79 (s, 3H).

Compound 134

N-[5-chloro-2-(methylsulfinyl)phenyl]-4-iodobenzenesulfonamide

Following General Procedure C, the title compound was prepared from N-[5-chloro-2-(methylthio)phenyl]-4-iodobenzenesulfonamide.

¹H NMR (600 MHz, CHLOROFORM-d) δ 10.69 (br. s., 1H), 7.83-7.91 (m, 2H), 7.61-7.69 (m, 3H), 7.01-7.08 (m, 2H), 2.79 (s, 3H).

Compound 135

4-bromo-N-[5-chloro-2-(methylsulfonyl)phenyl]benzenesulfonamide

Following General Procedure D, the title compound was prepared from 4-bromo-N-[5-chloro-2-(methylthio)phenyl]benzenesulfonamide.

¹H NMR (600 MHz, CHLOROFORM-d) δ 9.20-9.27 (m, 1H), 7.80 (dd, J=1.32, 8.36 Hz, 2H), 7.76 (d, J=8.51 Hz, 1H), 7.68 (dd, J=1.47, 8.80 Hz, 2H), 7.25 (d, J=1.47 Hz, 1H), 7.18-7.21 (m, 1H), 2.93 (d, J=1.47 Hz, 3H).

Compound 136

N-[5-chloro-2-(methylsulfonyl)phenyl]-4-iodobenzenesulfonamide

Following General Procedure D, the title compound was prepared from N-[5-chloro-2-(methylthio)phenyl]-4-iodobenzenesulfonamide.

¹H NMR (600 MHz, CHLOROFORM-d) δ 9.17-9.25 (m, 1H), 7.90 (d, J=8.51 Hz, 2H), 7.76 (d, J=8.51 Hz, 1H), 7.67 (d, J=1.76 Hz, 1H), 7.64 (d, J=8.51 Hz, 2H), 7.19 (dd, J=1.76, 8.51 Hz, 1H), 2.93 (s, 3H).

Compound 137

N-{5-chloro-2-[(pyridin-2-ylmethyl)thio]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure A and B, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 2-bromomethyl-pyridine hydrobromide, and benzofuran-2-sulfonyl chloride.

¹H NMR (600 MHz, CHLOROFORM-d) δ 12.32 (br. s, 1H), 8.87 (dt, J=0.77, 4.92 Hz, 1H), 7.76 (d, J=2.05 Hz, 1H), 7.58-7.65 (m, 2H), 7.44 (dd, J=0.88, 8.22 Hz, 1H), 7.34-7.42 (m, 3H), 7.25-7.30 (m, 2H), 7.06 (d, J=7.63 Hz, 1H), 6.96-7.01 (m, 1H), 3.98 (s, 2H).

Compound 138

N-{5-chloro-2-[(pyridin-3-ylmethyl)thio]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure A and B, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 3-bromomethyl-pyridine hydrobromide, and benzofuran-2-sulfonyl chloride.

¹H NMR (600 MHz, CHLOROFORM-d) δ 8.42 (dd, J=1.61, 4.84 Hz, 1H), 8.12 (d, J=1.76 Hz, 2H), 7.66-7.70 (m, 2H), 7.50 (d, J=1.17 Hz, 1H), 7.46-7.49 (m, 1H), 7.42-7.46 (m, 1H), 7.33 (ddd, J=1.17, 6.97, 8.00 Hz, 1H), 7.26-7.29 (m, 1H), 7.13 (ddd, J=0.88, 4.70, 7.92 Hz, 1H), 7.00 (d, J=8.51 Hz, 1H), 6.89 (dd, J=2.20, 8.36 Hz, 1H), 3.75 (s, 2H).

Compound 139

N-{5-chloro-2-[(pyridin-3-ylmethyl)sulfinyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound was prepared from N-{5-chloro-2-[(pyridin-3-ylmethypthio]phenyl}-1-benzofuran-2-sulfonamide.

¹H NMR (600 MHz, METHANOL-d₄) δ 8.28 (d, J=4.11 Hz, 1H), 7.86 (br. s., 1H), 7.68-7.71 (m, J=0.73, 1.32 Hz, 1H), 7.54 (d, J=1.76 Hz, 1H), 7.36-7.41 (m, 2H), 7.31-7.35 (m, 1H), 7.25-7.29 (m, J=1.03, 7.78 Hz, 1H), 7.24 (d, J=7.92 Hz, 1H), 7.12 (dd, J=4.99, 7.63 Hz, 1H), 6.73 (d, J=8.51 Hz, 1H), 6.68 (dd, J=2.05, 8.51 Hz, 1H), 4.55 (s, 2H).

Compound 140

N-(5-chloro-2-{[(1-oxidopyridin-3-yl)methyl]sulfinyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound was prepared from N-{5-chloro-2-[(pyridin-3-ylmethypthio]phenyl}-1-benzofuran-2-sulfonamide.

¹H NMR (600 MHz, METHANOL-d₄) δ 8.10-8.14 (m, 1H), 8.01 (t, J=1.47 Hz, 1H), 7.66-7.68 (m, 1H), 7.42-7.49 (m, 2H), 7.34 (ddd, J=1.17, 7.12, 8.44 Hz, 1H), 7.23-7.29 (m, 2H), 7.14 (dd, J=6.60, 7.78 Hz, 1H), 6.87 (d, J=7.92 Hz, 1H), 6.83 (d, J=8.22 Hz, 1H), 6.71 (dd, J=2.05, 8.22 Hz, 1H), 4.63 (d, J=13.21 Hz, 1H), 4.37 (d, J=13.21 Hz, 1H).

Compound 141

N-{5-chloro-2-[(pyridin-3-ylmethyl)sulfonyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound was prepared from N-{5-chloro-2-[(pyridin-3-ylmethypthio]phenyl}-1-benzofuran-2-sulfonamide.

¹H NMR (600 MHz, METHANOL-d₄) δ 8.27 (d, J=4.11 Hz, 1H), 8.04 (br. s., 1H), 7.78 (t, J=1.76 Hz, 1H), 7.65 (d, J=7.92 Hz, 1H), 7.46 (d, J=0.88 Hz, 1H), 7.31-7.37 (m, 2H), 7.27-7.31 (m, 1H), 7.21-7.26 (m, 2H), 7.06 (dd, J=5.14, 7.48 Hz, 1H), 6.67 (dt, J=1.76, 8.51 Hz, 1H), 4.98 (s, 2H).

Compound 142

N-(5-chloro-2-{[(1-oxidopyridin-3-yl)methyl]sulfonyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound was prepared from N-{5-chloro-2-[(pyridin-3-ylmethypthio]phenyl}-1-benzofuran-2-sulfonamide.

¹H NMR (600 MHz, DMSO-d₆) δ 8.01-8.08 (m, 2H), 7.68 (d, J=7.92 Hz, 1H), 7.53 (d, J=8.22 Hz, 1H), 7.46-7.48 (m, 1H), 7.31-7.37 (m, 2H), 7.23-7.27 (m, 2H), 7.11-7.15 (m, 1H), 6.98 (d, J=7.92 Hz, 1H), 6.58-6.61 (m, 1H), 5.09 (s, 2H).

Compound 143

N-{5-chloro-2-[(3-nitrobenzyl)thio]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure G, the title compound was prepared from N,N′-[dithiobis(5-chloro-2,1-phenylene)]bis(1-benzofuran-2-sulfonamide) Intermediate 8 and 1-bromomethyl-3-nitro-benzene.

¹H NMR (600 MHz, CHLOROFORM-d) δ 8.08 (s, 1H), 8.02 (ddd, J=1.17, 2.35, 8.22 Hz, 1H), 7.77 (t, J=2.05 Hz, 1H), 7.65-7.69 (m, 2H), 7.50 (d, J=0.88 Hz, 1H), 7.45-7.48 (m, 1H), 7.41-7.45 (m, 1H), 7.30-7.36 (m, 2H), 7.21 (dq, J=0.88, 7.63 Hz, 1H), 7.03 (d, J=8.22 Hz, 1H), 6.89 (dd, J=2.05, 8.22 Hz, 1H), 3.84 (s, 2H).

Compound 144

N-{5-chloro-2-[(3-methoxybenzyl)thio]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure G, the title compound was prepared from N,N′-[dithiobis(5-chloro-2,1-phenylene)]bis(1-benzofuran-2-sulfonamide) Intermediate 8 and 1-bromomethyl-3-methoxy-benzene.

¹H NMR (600 MHz, CHLOROFORM-d) δ 8.11 (s, 1H), 7.64-7.68 (m, 2H), 7.40-7.50 (m, 3H), 7.31 (ddd, J=0.88, 7.04, 7.92 Hz, 1H), 7.07-7.13 (m, 2H), 6.90 (dd, J=2.05, 8.22 Hz, 1H), 6.73 (ddd, J=1.17, 2.49, 8.36 Hz, 1H), 6.53-6.56 (m, 1H), 6.48 (t, J=2.35 Hz, 1H), 3.74 (s, 2H), 3.66 (s, 3H).

Compound 145

N-{5-chloro-2-[(pyridin-2-ylmethyl)sulfinyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound was prepared from N-{5-chloro-2-[(pyridin-2-ylmethypthio]phenyl}-1-benzofuran-2-sulfonamide.

¹H NMR (600 MHz, METHANOL-d₄) δ 8.46 (d, J=4.70 Hz, 1H), 7.64-7.73 (m, 2H), 7.48 (d, J=8.51 Hz, 1H), 7.38-7.45 (m, 3H), 7.25-7.34 (m, 3H), 7.07-7.17 (m, 2H), 4.58 (d, J=12.91 Hz, 1H), 4.35 (d, J=12.91 Hz, 1H).

Compound 146

N-{5-chloro-2-[(pyridin-2-ylmethyl)sulfonyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound was prepared from N-{5-chloro-2-[(pyridin-2-ylmethypthio]phenyl}-1-benzofuran-2-sulfonamide.

¹H NMR (600 MHz, METHANOL-d₄) δ 8.42 (dt, J=0.84, 4.77 Hz, 1H), 7.75 (d, J=2.05 Hz, 1H), 7.67 (d, J=7.63 Hz, 1H), 7.41-7.49 (m, 3H), 7.31-7.39 (m, 2H), 7.22-7.29 (m, 2H), 7.07 (d, J=7.63 Hz, 1H), 6.76 (dd, J=1.91, 8.66 Hz, 1H), 5.07 (s, 2H).

Compound 147

N-(5-chloro-2-{[(1-oxidopyridin-2-yl)methyl]sulfonyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound was prepared from N-{5-chloro-2-[(pyridin-2-ylmethypthio]phenyl}-1-benzofuran-2-sulfonamide

¹H NMR (600 MHz, METHANOL-d₄) δ 8.35 (d, J=6.46 Hz, 1H), 7.74 (d, J=2.05 Hz, 1H), 7.66 (d, J=7.92 Hz, 1H), 7.60 (d, J=8.51 Hz, 1H), 7.38 (s, 2H), 7.34 (d, J=10.56 Hz, 3H), 7.25 (s, 2H), 6.77 (dd, J=1.32, 8.36 Hz, 1H), 5.54 (br. s, 2H).

Compound 148

N-(5-chloro-2-{[(1-oxidopyridin-2-yl)methyl]sulfinyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound was prepared from N-{5-chloro-2-[(pyridin-2-ylmethypthio]phenyl}-1-benzofuran-2-sulfonamide

¹H NMR (600 MHz, METHANOL-d₄) δ 8.31 (d, J=6.16 Hz, 1H), 7.66 (d, J=7.92 Hz, 1H), 7.46-7.50 (m, 1H), 7.38-7.42 (m, 1H), 7.30-7.38 (m, 2H), 7.28 (s, 3H), 7.19 (d, J=8.51 Hz, 1H), 7.05 (d, J=7.63 Hz, 1H), 6.82 (d, J=8.22 Hz, 1H), 5.14 (d, J=12.62 Hz, 1H), 4.68 (d, J=12.32 Hz, 1H).

Compound 149

N-{2-[(3-aminobenzyl)thio]-5-chlorophenyl}-1-benzofuran-2-sulfonamide

Following General Procedure L, the title compound was prepared from N-{5-chloro-2-[(3-nitrobenzypthio]phenyl}-1-benzofuran-2-sulfonamide.

¹H NMR (600 MHz, CHLOROFORM-d) δ 7.64-7.68 (m, 2H), 7.47-7.51 (m, 1H), 7.40-7.46 (m, 2H), 7.29-7.34 (m, 1H), 7.14 (d, J=8.22 Hz, 1H), 6.97 (t, J=7.78 Hz, 1H), 6.92 (dd, J=2.35, 8.22 Hz, 1H), 6.48-6.52 (m, 1H), 6.35 (dd, J=0.59, 7.63 Hz, 1H), 6.28 (t, J=1.91 Hz, 1H), 3.67 (s, 2H).

Compound 150

N-{2-[(3-aminobenzyl)sulfinyl]-5-chlorophenyl}-1-benzofuran-2-sulfonamide

Following General Procedure C and K, the title compound was prepared from N-{5-chloro-2-[(3-nitrobenzypthio]phenyl}-1-benzofuran-2-sulfonamide.

¹H NMR (600 MHz, METHANOL-d₄) δ 7.69 (d, J=7.92 Hz, 1H), 7.48 (d, J=8.51 Hz, 1H), 7.37-7.43 (m, 3H), 7.30 (td, J=0.88, 7.48 Hz, 1H), 7.20 (d, J=8.51 Hz, 1H), 7.01 (dd, J=2.05, 8.51 Hz, 1H), 6.95 (t, J=7.78 Hz, 1H), 6.70-6.74 (m, 1H), 6.64 (t, J=1.76 Hz, 1H), 6.45 (d, J=7.63 Hz, 1H), 4.40 (d, J=12.62 Hz, 1H), 4.00 (d, J=12.62 Hz, 1H).

Compound 151

N-{2-[(3-aminobenzyl)sulfonyl]-5-chlorophenyl}-1-benzofuran-2-sulfonamide

Following General Procedure D and K, the title compound was prepared from N-{5-chloro-2-[(3-nitrobenzypthio]phenyl}-1-benzofuran-2-sulfonamide.

¹H NMR (600 MHz, METHANOL-d₄) δ 7.80 (d, J=2.05 Hz, 1H), 7.69 (d, J=7.63 Hz, 1H), 7.52 (d, J=0.59 Hz, 1H), 7.40 (d, J=8.51 Hz, 1H), 7.35 (td, J=1.32, 7.70 Hz, 1H), 7.31 (d, J=8.51 Hz, 1H), 7.26-7.30 (m, J=7.92 Hz, 1H), 6.78 (dd, J=2.05, 8.51 Hz, 1H), 6.65 (t, J=7.78 Hz, 1H), 6.49 (dd, J=1.91, 7.78 Hz, 1H), 6.33 (t, J=1.76 Hz, 1H), 6.05 (d, J=7.34 Hz, 1H), 4.66 (s, 2H).

Compound 152

N-{5-chloro-2-[(3-hydroxybenzyl)thio]phenyl}-1-benzofuran-2-sulfonamide

To a solution of N-{5-chloro-2-[(3-methoxybenzyl)thio]phenyl}-1-benzofuran-2-sulfonamide (315 mg, 0.69 mmol) in CH₂Cl₂ (5 ml) at room temperature was added BBr₃ (1M solution in CH₂Cl₂, 2.1 ml, 2.1 mmol) and the reaction was stirred for 2 h, diluted with EtOAc, washed with brine, dried over Na₂SO₄, concentrated in vacuo. The crude product was purified by column chromatography on silica gel (25% ethyl acetate in hexane) to give the title compound (196 mg, 64%).

¹H NMR (600 MHz, CHLOROFORM-d) δ 8.10 (br. s., 1H), 7.63-7.69 (m, 2H), 7.41-7.51 (m, 3H), 7.32 (td, J=0.88, 7.48 Hz, 1H), 7.12 (d, J=8.22 Hz, 1H), 7.05 (t, J=7.92 Hz, 1H), 6.91 (dd, J=2.35, 8.22 Hz, 1H), 6.66 (ddd, J=0.73, 2.57, 8.14 Hz, 1H), 6.51 (d, J=7.92 Hz, 1H), 6.45-6.48 (m, 1H), 5.07 (br. s., 1H), 3.71 (s, 2H).

Compound 153

N-{5-chloro-2-[(3-hydroxybenzyl)sulfinyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound was prepared from N-{5-chloro-2-[(3-hydroxybenzypthio]phenyl}-1-benzofuran-2-sulfonamide

¹H NMR (600 MHz, CHLOROFORM-d) δ 10.27-11.14 (m, 1H), 7.73 (d, J=2.05 Hz, 1H), 7.67 (d, J=7.92 Hz, 1H), 7.53 (s, 1H), 7.43-7.47 (m, 1H), 7.38-7.42 (m, 1H), 7.28-7.33 (m, 1H), 7.04 (t, J=7.92 Hz, 1H), 6.92 (dd, J=1.47, 8.22 Hz, 1H), 6.79 (d, J=8.22 Hz, 1H), 6.74 (dd, J=2.05, 8.22 Hz, 1H), 6.59 (s, 1H), 6.40 (d, J=7.34 Hz, 1H), 4.33 (d, J=12.32 Hz, 1H), 4.16 (d, J=12.62 Hz, 1H).

Compound 154

N-{5-chloro-2-[(3-hydroxybenzyl)sulfonyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound was prepared from N-{5-chloro-2-[(3-hydroxybenzyl)thio]phenyl}-1-benzofuran-2-sulfonamide

¹H NMR (600 MHz, CHLOROFORM-d) δ 7.76 (br. s., 1H), 7.65-7.72 (m, 1H), 7.56 (br. s., 1H), 7.44 (br. s., 3H), 7.33 (s, 1H), 7.02 (br. s., 2H), 6.77 (br. s., 1H), 6.58 (br. s., 1H), 6.39-6.47 (m, 1H), 4.28 (br. s., 2H).

Intermediate 37

benzofuran-2-sulfonic acid (5-chloro-2-mercapto-phenyl)-amide

Following General Procedure N, the title compound was prepared from N,N′-[dithiobis(5-chloro-2,1-phenylene)]bis(1-benzofuran-2-sulfonamide) Intermediate 8 and was used without further purification.

Compound 155

N-{5-chloro-2-[(trifluoromethyl)thio]phenyl}-1-benzofuran-2-sulfonamide

To a solution of benzofuran-2-sulfonic acid (5-chloro-2-mercapto-phenyl)-amide (332 mg, 0.98 mmol) in CH₂Cl₂ (10 ml) at −78° C. was added 3,3-dimethyl-1-(trifluoromethyl)-1,2-benziodoxole (CAS #: 887144-97-0, 354 mg, 1.07 mmol) and the reaction was stirred for 1 h, and was concentrated in vacuo. The crude product was purified by column chromatography on silica gel (CH₂Cl₂) to give the title compound (375 mg, 94%).

¹H NMR (600 MHz, CHLOROFORM-d) δ 7.88 (s, 1H), 7.82 (d, J=2.05 Hz, 1H), 7.67 (dd, J=0.59, 7.92 Hz, 1H), 7.49-7.54 (m, 3H), 7.44-7.49 (m, 1H), 7.33 (td, J=1.03, 7.56 Hz, 1H), 7.11 (dd, J=2.20, 8.36 Hz, 1H).

Compound 156

N-{5-chloro-2-[(trifluoromethyl)sulfonyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure D using 10 equivalents of mCPBA in refluxing CH₂Cl₂, the title compound was prepared from N-{5-chloro-2-[(trifluoromethyl)thio]phenyl}-1-benzofuran-2-sulfonamide.

¹H NMR (600 MHz, acetone-d6) δ 7.90 (d, J=2.05 Hz, 1H), 7.78 (d, J=8.80 Hz, 1H), 7.71 (d, J=7.92 Hz, 1H), 7.51 (d, J=8.22 Hz, 1H), 7.36-7.43 (m, 2H), 7.29 (t, J=7.48 Hz, 1H), 6.92 (d, J=6.46 Hz, 1H).

Compound 157

N-{5-chloro-2-[(trifluoromethyl)sulfinyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure D using 10 equivalents of mCPBA in refluxing CH₂Cl₂, the title compound was prepared from N-{5-chloro-2-[(trifluoromethyl)thio]phenyl}-1-benzofuran-2-sulfonamide.

¹H NMR (600 MHz, acetone-d6) δ 10.00 (br. s., 1H), 7.89 (d, J=8.22 Hz, 1H), 7.78-7.81 (m, 1H), 7.63-7.66 (m, 1H), 7.50-7.59 (m, 4H), 7.39 (ddd, J=0.88, 7.26, 8.00 Hz, 1H).

Compound 158

N-{2-[(3-aminobenzyl)thio]-5-chlorophenyl}-2,4-difluorobenzenesulfonamide

Following General Procedure A, B, and K, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 1-bromomethyl-3-nitro-benzene, and 2,4-difluoro-benzenesulfonyl chloride.

¹H NMR (600 MHz, CHLOROFORM-d) δ 7.92 (td, J=6.16, 8.51 Hz, 1H), 7.47 (d, J=2.35 Hz, 1H), 7.19 (d, J=8.22 Hz, 1H), 7.01-7.06 (m, 1H), 6.95-7.01 (m, 1H), 6.88-6.94 (m, 2H), 6.57 (dd, J=1.47, 8.80 Hz, 1H), 6.40-6.45 (m, 2H), 3.72 (s, 2H).

Compound 159

N-{2-[(3-aminobenzyl)sulfonyl]-5-chlorophenyl}-2,4-difluorobenzenesulfonamide

Following General Procedure A, B, D, and K, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 1-bromomethyl-3-nitro-benzene, and 2,4-difluoro-benzenesulfonyl chloride.

¹H NMR (600 MHz, METHANOL-d₄) δ 8.05 (td, J=6.16, 8.51 Hz, 1H), 7.48-7.54 (m, 2H), 7.14-7.25 (m, 2H), 7.09 (dd, J=2.05, 8.51 Hz, 1H), 6.96 (t, J=7.78 Hz, 1H), 6.66-6.71 (m, 1H), 6.54 (t, J=1.91 Hz, 1H), 6.34 (d, J=7.63 Hz, 1H), 4.44 (s, 2H).

Compound 160

N-{2-[(3-aminobenzyl)sulfonyl]-5-chlorophenyl}-4-chloro-2-fluorobenzenesulfonamide

Following General Procedure A, B, D, and K, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 1-bromomethyl-3-nitro-benzene, and 4-chloro-2-fluoro-benzenesulfonyl chloride.

¹H NMR (600 MHz, METHANOL-d₄) δ 7.97 (t, J=8.51 Hz, 1H), 7.54 (d, J=8.51 Hz, 1H), 7.43-7.52 (m, 3H), 7.13-7.17 (m, 1H), 6.98 (t, J=7.78 Hz, 1H), 6.67-6.72 (m, 1H), 6.53 (s, 1H), 6.33 (d, J=7.63 Hz, 1H), 4.42 (s, 2H).

Compound 161

N-{2-[(3-aminobenzyl)sulfinyl]-5-chlorophenyl}-4-chloro-2-fluorobenzenesulfonamide

Following General Procedure A, B, C, and K, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 1-bromomethyl-3-nitro-benzene, and 4-chloro-2-fluoro-benzenesulfonyl chloride.

¹H NMR (600 MHz, METHANOL-d₄) δ 7.85 (t, J=8.07 Hz, 1H), 7.49 (dd, J=1.76, 9.98 Hz, 1H), 7.40 (dd, J=1.91, 8.36 Hz, 1H), 7.33 (d, J=8.22 Hz, 1H), 7.23 (dd, J=1.91, 8.36 Hz, 1H), 7.16 (d, J=2.05 Hz, 1H), 7.04 (t, J=7.78 Hz, 1H), 6.72-6.75 (m, 1H), 6.63 (t, J=1.91 Hz, 1H), 6.50 (d, J=7.34 Hz, 1H), 4.30 (d, J=12.91 Hz, 1H), 4.04 (d, J=12.62 Hz, 1H).

Compound 162

N-{2-[(3-aminobenzyl)thio]-5-chlorophenyl}benzenesulfonamide

Following General Procedure A, B, and K, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 1-bromomethyl-3-nitro-benzene, and benzenesulfonyl chloride.

¹H NMR (600 MHz, METHANOL-d₄) δ 7.75-7.79 (m, 2H), 7.57-7.62 (m, 1H), 7.48-7.53 (m, 2H), 7.44 (d, J=2.05 Hz, 1H), 7.14 (d, J=8.22 Hz, 1H), 6.99 (dd, J=2.35, 8.22 Hz, 1H), 6.95 (t, J=7.78 Hz, 1H), 6.56-6.60 (m, 1H), 6.45 (t, J=1.91 Hz, 1H), 6.35 (d, J=7.34 Hz, 1H), 3.58 (s, 2H).

Compound 163

N-{2-[(3-aminobenzyl)thio]-5-chlorophenyl}-4-chlorobenzenesulfonamide

Following General Procedure A, B, and K, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 1-bromomethyl-3-nitro-benzene, and 4-chloro-benzenesulfonyl chloride.

¹H NMR (600 MHz, CHLOROFORM-d) δ 7.69-7.72 (m, 2H), 7.54 (d, J=2.35 Hz, 1H), 7.40-7.44 (m, 2H), 7.17 (d, J=8.22 Hz, 1H), 7.03 (t, J=7.78 Hz, 1H), 6.95 (dd, J=2.20, 8.36 Hz, 1H), 6.58 (dd, J=1.76, 7.92 Hz, 1H), 6.34-6.39 (m, 2H), 3.61 (s, 2H).

Compound 164

N-{2-[(3-aminobenzyl)thio]-5-chlorophenyl}-3-chlorobenzenesulfonamide

Following General Procedure A, B, and K, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 1-bromomethyl-3-nitro-benzene, and 3-chloro-benzenesulfonyl chloride.

¹H NMR (600 MHz, CHLOROFORM-d) δ 7.80 (t, J=1.91 Hz, 1H), 7.63-7.66 (m, 1H), 7.56 (d, J=2.35 Hz, 1H), 7.52 (ddd, J=0.88, 1.98, 8.00 Hz, 1H), 7.39 (t, J=7.92 Hz, 1H), 7.16 (d, J=8.51 Hz, 1H), 7.02 (t, J=7.78 Hz, 1H), 6.96 (dd, J=2.05, 8.22 Hz, 1H), 6.55-6.59 (m, 1H), 6.35 (d, J=7.63 Hz, 1H), 6.32 (t, J=1.91 Hz, 1H), 3.56 (s, 2H).

Compound 165

N-{2-[(3-aminobenzyl)sulfonyl]-5-chlorophenyl}benzenesulfonamide

Following General Procedure A, B, D, and K, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 1-bromomethyl-3-nitro-benzene, and benzenesulfonyl chloride.

¹H NMR (600 MHz, METHANOL-d₄) δ 7.90-7.93 (m, 2H), 7.63-7.68 (m, 1H), 7.56-7.62 (m, 3H), 7.42 (d, J=8.51 Hz, 1H), 7.11 (dd, J=2.05, 8.51 Hz, 1H), 6.93 (t, J=7.78 Hz, 1H), 6.66 (ddd, J=0.73, 2.27, 8.14 Hz, 1H), 6.39 (t, J=1.91 Hz, 1H), 6.16 (d, J=7.34 Hz, 1H), 4.18 (s, 2H).

Compound 166

N-{2-[(3-aminobenzyl)sulfinyl]-5-chlorophenyl}benzenesulfonamide

Following General Procedure A, B, C, and K, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 1-bromomethyl-3-nitro-benzene, and benzenesulfonyl chloride.

¹H NMR (600 MHz, METHANOL-d₄) δ 7.82-7.86 (m, 2H), 7.64-7.69 (m, 1H), 7.56-7.62 (m, 2H), 7.27-7.31 (m, 1H), 7.22-7.27 (m, 1H), 7.08 (d, J=2.05 Hz, 1H), 6.99 (t, J=7.78 Hz, 1H), 6.67 (ddd, J=0.88, 2.35, 8.22 Hz, 1H), 6.50 (t, J=1.91 Hz, 1H), 6.36 (d, J=7.63 Hz, 1H), 4.12 (d, J=12.62 Hz, 1H), 3.95 (d, J=12.91 Hz, 1H).

Compound 167

N-{2-[(3-aminobenzyl)sulfonyl]-5-chlorophenyl}-4-chlorobenzenesulfonamide

Following General Procedure A, B, D, and K, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 1-bromomethyl-3-nitro-benzene, and 4-chloro-benzenesulfonyl chloride.

¹H NMR (600 MHz, METHANOL-d₄) δ 7.85-7.88 (m, 2H), 7.58-7.62 (m, 2H), 7.55 (d, J=2.05 Hz, 1H), 7.49 (d, J=8.51 Hz, 1H), 7.15 (dd, J=1.91, 8.66 Hz, 1H), 6.95 (t, J=7.78 Hz, 1H), 6.68 (ddd, J=0.88, 2.20, 8.07 Hz, 1H), 6.45 (t, J=1.91 Hz, 1H), 6.21 (d, J=7.63 Hz, 1H), 4.28 (s, 2H).

Compound 168

N-{2-[(3-aminobenzyl)sulfinyl]-5-chlorophenyl}-4-chlorobenzenesulfonamide

Following General Procedure A, B, C, and K, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 1-bromomethyl-3-nitro-benzene, and 4-chloro-benzenesulfonyl chloride.

¹H NMR (600 MHz, METHANOL-d₄) δ 7.79 (d, J=8.51 Hz, 2H), 7.59 (d, J=8.80 Hz, 2H), 7.32 (d, J=8.51 Hz, 1H), 7.24-7.29 (m, 1H), 7.06 (d, J=1.76 Hz, 1H), 6.99 (t, J=7.78 Hz, 1H), 6.65-6.69 (m, 1H), 6.52 (s, 1H), 6.38 (d, J=7.34 Hz, 1H), 4.16 (d, J=12.91 Hz, 1H), 3.97 (d, J=12.91 Hz, 1H).

Compound 169

N-{2-[(3-aminobenzyl)sulfonyl]-5-chlorophenyl}-3-chlorobenzenesulfonamide

Following General Procedure A, B, D, and K, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 1-bromomethyl-3-nitro-benzene, and 3-chloro-benzenesulfonyl chloride.

¹H NMR (600 MHz, METHANOL-d₄) δ 8.00 (t, J=1.91 Hz, 1H), 7.89-7.93 (m, 1H), 7.42-7.51 (m, 3H), 7.38 (d, J=8.51 Hz, 1H), 6.89 (t, J=7.78 Hz, 1H), 6.66 (dd, J=1.76, 8.51 Hz, 1H), 6.59 (d, J=8.22 Hz, 1H), 6.55 (s, 1H), 6.37 (d, J=7.63 Hz, 1H), 4.69 (s, 2H).

Compound 170

N-{2-[(3-aminobenzyl)sulfinyl]-5-chlorophenyl}-3-chlorobenzenesulfonamide

Following General Procedure A, B, C, and K, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 1-bromomethyl-3-nitro-benzene, and 3-chloro-benzenesulfonyl chloride.

¹H NMR (600 MHz, METHANOL-d₄) δ 7.85 (s, 1H), 7.77 (d, J=7.63 Hz, 1H), 7.51-7.55 (m, 1H), 7.47 (t, J=7.92 Hz, 1H), 7.22 (d, J=8.22 Hz, 1H), 7.19 (d, J=1.76 Hz, 1H), 6.93-7.00 (m, 2H), 6.65 (dd, J=2.20, 8.07 Hz, 1H), 6.58 (s, 1H), 6.43 (d, J=7.63 Hz, 1H), 4.35 (d, J=12.91 Hz, 1H), 3.82 (d, J=12.91 Hz, 1H).

Compound 171

3-{[4-chloro-2-({[4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]thio}-N-isopropylpropanamide

Following General Procedure H, B, the title compound was prepared from 2-amino-4-chloro-benzenethiol, N-isopropyl-acrylamide, and 4-chloro-3-trifluoromethyl-benzenesulfonyl chloride.

¹H NMR (300 MHz, CD₃OD) δ 8.19 (d, J=1.47 Hz, 1H), 7.98 (d, J=8.20 Hz, 1H), 7.60 (d, J=8.20 Hz, 1H), 7.23 (d, J=2.05 Hz, 1H), 7.06 (d, J=8.20 Hz, 1H), 6.75 (dd, J=2.20, 8.35 Hz, 1H), 3.85-4.03 (m, 1H), 3.00 (t, J=7.33 Hz, 2H), 2.39 (t, J=7.47 Hz, 2H), 1.12 (d, 6H).

Compound 172

3-{[4-chloro-2-({[4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]thio}-N,N-dimethylpropanamide

Following General Procedure H, B, the title compound was prepared from 2-amino-4-chloro-benzenethiol, N,N-dimethyl-acrylamide, and 4-chloro-3-trifluoromethyl-benzenesulfonyl chloride.

¹H NMR (300 MHz, CD₃OD) δ 8.11 (s, 1H), 7.90 (d, J=7.91 Hz, 1H), 7.71-7.79 (m, 1H), 7.49 (d, J=2.34 Hz, 1H), 7.39 (d, J=8.50 Hz, 1H), 7.21 (none, J=2.34, 8.50 Hz, 1H), 2.96 (d, J=7.62 Hz, 6H), 2.90 (t, J=7.03 Hz, 2H), 2.51 (t, J=7.03 Hz, 2H).

Compound 173

3-{[4-chloro-2-({[4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfinyl}-N-isopropylpropanamide

Following General Procedure C, the title compound was prepared from 3-{[4-chloro-2-({[4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]thio}-N,N-dimethylpropanamide

¹H NMR (300 MHz, CD₃OD) δ 8.17 (d, J=1.76 Hz, 1H), 8.01 (d, J=8.20 Hz, 1H), 7.67 (d, J=8.50 Hz, 1H), 7.39 (d, J=8.20 Hz, 1H), 7.24 (d, J=1.76 Hz, 1H), 6.88 (dd, J=1.90, 8.35 Hz, 1H), 3.91 (quin, J=6.59 Hz, 1H), 3.37-3.52 (m, 1H), 3.09-3.25 (m, 1H), 2.58 (ddd, J=5.71, 9.89, 15.16 Hz, 1H), 2.26 (ddd, J=5.86, 9.74, 15.16 Hz, 1H), 1.10 (dd, 4H).

Compound 174

3-{[4-chloro-2-({[4-chloro-3-(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfinyl}propanamide

Following General Procedure H, B, the title compound was prepared from 2-amino-4-chloro-benzenethiol, acrylamide, and 4-chloro-3-trifluoromethyl-benzenesulfonyl chloride.

¹H NMR (600 MHz, CD₃OD) δ 8.16 (d, J=1.76 Hz, 1H), 8.00 (dd, J=2.05, 8.22 Hz, 1H), 7.75 (d, J=8.51 Hz, 1H), 7.57 (d, J=8.51 Hz, 1H), 7.32 (s, 1H), 7.21 (d, J=7.92 Hz, 1H), 3.26 (br. s., 1H), 3.18 (br. s., 1H), 2.99-3.07 (m, 3H), 2.95 (s, 3H), 2.88 (dt, J=7.37, 16.95 Hz, 1H), 2.62-2.77 (m, 1H).

Compound 175

N-[5-chloro-2-(methylsulfinyl)phenyl]benzenesulfonamide

Following General Procedure B, C, the title compound was prepared from 5-chloro-2-(methylsulfinyl)aniline and benzenesulfonyl chloride.

¹H NMR (300 MHz, acetone-d6) δ 10.64 (br. s., 1H), 7.93 (d, J=7.03 Hz, 2H), 7.59-7.79 (m, 3H), 7.55 (d, J=1.76 Hz, 1H), 7.45 (d, J=8.50 Hz, 1H), 7.26 (dd, J=1.90, 8.35 Hz, 1H), 2.74 (s, 3H).

Compound 176

N-[5-chloro-2-(methylthio)phenyl]thiophene-2-sulfonamide

Following General Procedure B, the title compound was prepared from 5-chloro-2-(methylsulfinyl)aniline and thiophene-2-sulfonyl chloride.

¹H NMR (300 MHz, CD₃OD) δ 7.75 (dd, J=1.17, 4.98 Hz, 1H), 7.50 (dd, J=1.32, 3.66 Hz, 1H), 7.40 (d, J=2.05 Hz, 1H), 7.26-7.34 (m, 1H), 7.15-7.24 (m, 1H), 7.08 (dd, J=3.81, 4.98 Hz, 1H), 2.23 (s, 3H).

Compound 177

N-[5-chloro-2-(methylsulfinyl)phenyl]thiophene-2-sulfonamide

Following General Procedure C, the title compound was prepared from N-[5-chloro-2-(methylthio)phenyl]thiophene-2-sulfonamide

¹H NMR (600 MHz, CD₃OD) δ 7.81 (d, J=4.40 Hz, 1H), 7.75 (d, J=8.51 Hz, 1H), 7.51-7.57 (m, 1H), 7.43 (d, J=7.92 Hz, 1H), 7.15 (dd, J=4.84, 8.66 Hz, 2H), 2.79 (s, 3H).

Compound 178

N-{2-[(3-nitrobenzyl)sulfonyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound (136 mg, 82%) was prepared from benzofuran-2-sulfonic acid [2-(3-nitro-benzylsulfanyl)-phenyl]-amide.

1H NMR (600 MHz, acetone-d6) δ 9.57 (br. s., 1H), 8.17 (dt, J=2.53, 6.38 Hz, 1H), 7.93 (d, J=0.88 Hz, 1H), 7.74-7.83 (m, 3H), 7.69 (td, J=1.47, 7.92 Hz, 1H), 7.63 (dd, J=1.47, 7.92 Hz, 1H), 7.52-7.59 (m, 3H), 7.47 (ddd, J=1.17, 7.41, 8.44 Hz, 1H), 7.30-7.38 (m, 1H), 7.23 (t, J=7.63 Hz, 1H), 4.85 (s, 2H).

Compound 179

N-(5-chloro-2-{[2-(3,5-dimethyl-1H-pyrazol-4-yl)ethyl]sulfinyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound (79 mg, 73%) was prepared from N-(5-chloro-2-{[2-(3,5-dimethyl-1H-pyrazol-4-yl)ethyl]thio}phenyl)-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 7.61 (d, J=7.92 Hz, 1H), 7.46 (d, J=2.05 Hz, 1H), 7.44 (d, J=8.22 Hz, 1H), 7.28-7.32 (m, 1H), 7.21-7.26 (m, 1H), 7.19 (dd, J=0.73, 8.36 Hz, 1H), 7.15 (d, J=0.88 Hz, 1H), 6.92 (dd, J=1.91, 8.36 Hz, 1H), 3.52-3.62 (m, 1H), 2.80-2.91 (m, 2H), 2.56-2.65 (m, 1H), 2.11 (s, 6H).

Compound 180

4-chloro-N-{5-chloro-2-[(3-hydroxycyclopentyl)sulfonyl]phenyl}-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure D, followed by treatment of the crude product with NaBH₄ in MeOH, the title compound was prepared from 4-Chloro-N-[5-chloro-2-(3-oxo-cyclopentylsulfanyl)-phenyl]-3-trifluoromethyl-benzenesulfonamide (Intermediate 35).

1H NMR (600 MHz, CD₃OD) δ 8.34 (s, 1H), 8.18 (dd, J=1.91, 8.36 Hz, 1H), 7.70-7.79 (m, 2H), 7.65 (s, 1H), 7.00 (br. s., 1H), 4.12-4.18 (m, 2H), 1.98-2.10 (m, 2H), 1.72-1.84 (m, 2H), 1.63-1.71 (m, 2H).

Compound 181

N-[5-chloro-2-(methylthio)phenyl]-4-methyl-3-nitrobenzenesulfonamide

Following General Procedure B, the title compound (197 mg, 61%) was prepared from 5-Chloro-2-methylsulfanyl-phenylamine (150 mg, 0.87 mmol) and 4-Methyl-3-nitro-benzenesulfonyl chloride (235 mg, 0.87 mmol).

¹H NMR (600 MHz, CD₃OD) δ 8.29 (d, J=1.76 Hz, 1H), 7.85 (dd, J=1.91, 8.07 Hz, 1H), 7.57 (d, J=8.22 Hz, 1H), 7.39 (d, J=2.05 Hz, 1H), 7.17-7.25 (m, 2H), 2.60 (s, 3H), 2.20 (s, 3H).

Compound 182

chloro-2-(methylsulfinyl)phenyl]-4-methyl-3-nitrobenzenesulfonamide

Following General Procedure C, the title compound was prepared from N-[5-chloro-2-(methylthio)phenyl]-4-methyl-3-nitrobenzenesulfonamide

¹H NMR (600 MHz, CDCL₃) δ 10.88 (br. s., 1H), 8.53 (d, J=2.05 Hz, 1H), 8.05 (dd, J=1.91, 8.07 Hz, 1H), 7.64 (d, J=1.76 Hz, 1H), 7.54 (d, J=8.22 Hz, 1H), 7.04-7.16 (m, 2H), 2.87 (s, 3H), 2.67 (s, 3H).

Compound 183

N-[5-chloro-2-(methylsulfonyl)phenyl]-4-methyl-3-nitrobenzenesulfonamide

Following General Procedure D, the title compound was prepared from N-[5-chloro-2-(methylthio)phenyl]-4-methyl-3-nitrobenzenesulfonamide

¹H NMR (600 MHz, CDCL₃) δ 9.36 (br. s., 1H), 8.52 (d, J=2.05 Hz, 1H), 8.05 (dd, J=2.05, 8.22 Hz, 1H), 7.79 (d, J=8.51 Hz, 1H), 7.67 (d, J=2.05 Hz, 1H), 7.58 (d, J=7.92 Hz, 1H), 7.23 (dd, J=1.76, 8.51 Hz, 1H), 3.04 (s, 3H), 2.68 (s, 3H).

Compound 184

4-chloro-N-[5-chloro-2-(methylthio)phenyl]benzenesulfonamide

Following General Procedure B, the title compound (150 mg, 68%) was prepared from 5-Chloro-2-methylsulfanyl-phenylamine (110 mg, 0.64 mmol) and 4-Chloro-benzenesulfonyl chloride (134 mg, 0.64 mmol).

¹H NMR (600 MHz, CD₃OD) δ 7.72 (d, J=9.10 Hz, 2H), 7.51 (d, J=8.80 Hz, 2H), 7.37 (d, J=2.05 Hz, 1H), 7.25 (d, J=8.51 Hz, 1H), 7.19 (dd, J=2.05, 8.22 Hz, 1H), 2.20 (s, 3H).

Compound 185

4-chloro-N-[5-chloro-2-(methylsulfinyl)phenyl]benzenesulfonamide

Following General Procedure C, the title compound was prepared from 4-chloro-N-[5-chloro-2-(methylthio)phenyl]benzenesulfonamide

¹H NMR (600 MHz, CDCL₃) δ 10.67 (br. s., 1H), 7.89 (d, J=8.80 Hz, 2H), 7.66 (d, J=1.76 Hz, 1H), 7.50 (d, J=8.80 Hz, 2H), 6.91-7.16 (m, 2H), 2.80 (none, 3H).

Compound 186

4-chloro-N-[5-chloro-2-(methylsulfonyl)phenyl]benzenesulfonamide

Following General Procedure D, the title compound was prepared from 4-chloro-N-[5-chloro-2-(methylthio)phenyl]benzenesulfonamide

¹H NMR (600 MHz, CDCL₃) δ 7.89 (d, J=8.80 Hz, 2H), 7.78 (d, J=8.51 Hz, 1H), 7.68 (d, J=1.76 Hz, 1H), 7.53 (d, J=8.80 Hz, 2H), 7.20 (dd, J=2.05, 8.51 Hz, 1H), 2.96 (s, 3H).

Compound 187

4-chloro-N-[5-chloro-2-(methylthio)phenyl]-3-methylbenzenesulfonamide

Following General Procedure B, the title compound (205 mg, 59%) was prepared from 5-chloro-2-methylsulfanyl-phenylamine (165 mg, 0.95 mmol) and 4-chloro-3-methyl-benzenesulfonyl chloride (215 mg, 0.95 mmol).

¹H NMR (600 MHz, CDCL₃) δ 7.71 (d, 1H), 7.65 (s, 1H), 7.62 (d, J=2.05 Hz, 1H), 7.57 (dd, J=2.05, 8.22 Hz, 1H), 7.41 (d, J=8.22 Hz, 1H), 7.32 (d, J=8.51 Hz, 1H), 7.04 (dd, J=2.20, 8.36 Hz, 1H), 2.39 (s, 3H), 2.19 (s, 3H).

Compound 188

4-chloro-N-[5-chloro-2-(methylsulfinyl)phenyl]-3-methylbenzenesulfonamide

Following General Procedure C, the title compound was prepared from 4-chloro-N-[5-chloro-2-(methylthio)phenyl]-3-methylbenzenesulfonamide

¹H NMR (600 MHz, CDCL₃) δ 10.62 (s, 1H), 7.82 (d, J=2.05 Hz, 1H), 7.71 (dd, J=1.91, 8.36 Hz, 1H), 7.63 (d, J=2.05 Hz, 1H), 7.48 (d, J=8.51 Hz, 1H), 7.02-7.15 (m, 2H), 2.81 (s, 3H), 2.43 (s, 3H).

Compound 189

4-chloro-N-[5-chloro-2-(methylsulfonyl)phenyl]-3-methylbenzenesulfonamide

Following General Procedure D, the title compound was prepared from 4-chloro-N-[5-chloro-2-(methylthio)phenyl]-3-methylbenzenesulfonamide

¹H NMR (600 MHz, CDCL₃) δ 9.24 (br. s., 1H), 7.83 (d, J=2.05 Hz, 1H), 7.78 (d, J=8.51 Hz, 1H), 7.71 (dd, J=2.05, 8.51 Hz, 1H), 7.67 (d, J=1.76 Hz, 1H), 7.50 (d, J=8.22 Hz, 1H), 7.19 (dd, J=1.76, 8.51 Hz, 1H), 2.97 (s, 3H), 2.44 (s, 3H).

Compound 190

N-[5-chloro-2-(methylthio)phenyl]-3-nitro-4-(trifluoromethyl)benzenesulfonamide

Following General Procedure B, the title compound (176 mg, 43%) was prepared from 5-chloro-2-methylsulfanyl-phenylamine (167 mg, 0.95 mmol) and 4-nitro-3-trifluoromethyl-benzenesulfonyl chloride (278 mg, 0.95 mmol).

¹H NMR (300 MHz, CD₃OD) δ 8.04-8.22 (m, 3H), 7.42 (d, J=2.05 Hz, 1H), 7.16-7.32 (m, 2H), 2.20 (s, 3H).

Compound 191

N-[5-chloro-2-(methylsulfonyl)phenyl]-3-nitro-4-(trifluoromethyl)benzenesulfonamide

Following General Procedure D, the title compound was prepared from N-[5-chloro-2-(methylthio)phenyl]-3-nitro-4-(trifluoromethyl)benzenesulfonamide ¹H NMR (600 MHz, acetone-d6) δ 9.64 (br. s., 1H), 8.49-8.65 (m, 2H), 8.33 (d, J=8.51 Hz, 1H), 7.89 (d, J=8.51 Hz, 1H), 7.70 (d, J=1.76 Hz, 1H), 7.39 (d, J=8.22 Hz, 1H), 3.24 (s, 3H).

Compound 192

N-[5-chloro-2-(methylsulfinyl)phenyl]-3-nitro-4-(trifluoromethyl)benzenesulfonamide

Following General Procedure D, the title compound was prepared from N-[5-chloro-2-(methylthio)phenyl]-3-nitro-4-(trifluoromethyl)benzenesulfonamide

¹H NMR (600 MHz, acetone-d6) δ 8.25-8.35 (m, 2H), 8.11 (d, J=8.22 Hz, 1H), 7.39-7.48 (m, 2H), 6.75 (dd, J=2.05, 8.22 Hz, 1H), 2.70 (s, 3H).

Compound 193

N-[5-chloro-2-(methylthio)phenyl]-2,4-difluorobenzenesulfonamide

Following General Procedure B, the title compound (358 mg, 94%) was prepared from 5-chloro-2-methylsulfanyl-phenylamine (189 mg, 1.09 mmol) and 2,4-Difluoro-benzenesulfonyl chloride (231 mg, 1.09 mmol).

¹H NMR (300 MHz, CD₃OD) δ 7.82 (td, J=6.15, 8.50 Hz, 1H), 7.34 (d, J=2.05 Hz, 1H), 7.16-7.30 (m, 3H), 7.00-7.16 (m, 1H), 2.27 (s, 3H).

Compound 194

N-[5-chloro-2-(methylsulfonyl)phenyl]-2,4-difluorobenzenesulfonamide

Following General Procedure D, the title compound was prepared from N-[5-chloro-2-(methylthio)phenyl]-2,4-difluorobenzenesulfonamide

¹H NMR (300 MHz, acetone-d6) δ 9.81 (br. s., 1H), 8.15-8.32 (m, 1H), 7.91 (d, J=8.50 Hz, 1H), 7.63 (d, J=1.76 Hz, 1H), 7.24-7.46 (m, 3H), 3.27 (s, 3H).

Compound 195

N-[5-chloro-2-(methylsulfinyl)phenyl]-2,4-difluorobenzenesulfonamide

Following General Procedure D, the title compound was prepared from N-[5-chloro-2-(methylthio)phenyl]-2,4-difluorobenzenesulfonamide

¹H NMR (600 MHz, acetone-d6) δ 10.97 (br. s., 1H), 8.10 (td, J=6.16, 8.51 Hz, 1H), 7.51 (d, J=8.22 Hz, 1H), 7.46 (d, J=2.05 Hz, 1H), 7.30-7.38 (m, 1H), 7.24-7.31 (m, 2H), 2.90 (s, 3H).

Compound 196

N-[5-chloro-2-(methylthio)phenyl]-5-methylfuran-2-sulfonamide

Following General Procedure B, the title compound (212 mg, 48%) was prepared from 5-chloro-2-methylsulfanyl-phenylamine (189 mg, 1.09 mmol) and 5-methyl-furan-2-sulfonyl chloride (250 mg, 1.38 mmol).

¹H NMR (300 MHz, acetone-d6) δ 8.53 (br. s., 1H), 7.37-7.49 (m, 2H), 7.25 (dd, J=2.34, 8.50 Hz, 1H), 6.96 (d, J=3.22 Hz, 1H), 6.24 (d, J=2.64 Hz, 1H), 2.38 (s, 3H), 2.34 (s, 3H).

Compound 197

N-[5-chloro-2-(methylsulfinyl)phenyl]-5-methylfuran-2-sulfonamide

Following General Procedure C, the title compound was prepared from N-[5-chloro-2-(methylthio)phenyl]-5-methylfuran-2-sulfonamide

¹H NMR (600 MHz, acetone-d6) δ 10.74 (br. s., 1H), 7.55 (d, J=2.05 Hz, 1H), 7.51 (d, J=8.22 Hz, 1H), 7.30 (dd, J=1.91, 8.36 Hz, 1H), 7.18 (d, J=3.23 Hz, 1H), 6.24-6.35 (m, 1H), 2.90 (s, 3H), 2.34 (s, 3H).

Compound 198

N-[5-chloro-2-(methylsulfonyl)phenyl]-5-methylfuran-2-sulfonamide

Following General Procedure D, the title compound was prepared from N-[5-chloro-2-(methylthio)phenyl]-5-methylfuran-2-sulfonamide

¹H NMR (600 MHz, acetone-d6) δ 9.54 (br. s., 1H), 7.90 (d, J=8.51 Hz, 1H), 7.73 (d, J=2.05 Hz, 1H), 7.39 (dd, J=1.76, 8.51 Hz, 1H), 7.31 (d, J=3.52 Hz, 1H), 6.32 (d, J=3.23 Hz, 1H), 3.24 (s, 3H), 2.33 (s, 3H).

Compound 199

N-[5-chloro-2-(methylthio)phenyl]furan-2-sulfonamide

Following General Procedure B, the title compound (215 mg, 47%) was prepared from 5-chloro-2-methylsulfanyl-phenylamine (260 mg, 1.50 mmol) and furan-2-sulfonyl chloride (250 mg, 1.50 mmol).

¹H NMR (300 MHz, acetone-d6) δ 8.67 (br. s., 1H), 7.84 (s, 1H), 7.32-7.46 (m, 2H), 7.26 (dd, J=2.20, 8.35 Hz, 1H), 7.07 (d, J=3.52 Hz, 1H), 6.63 (dd, J=1.76, 3.52 Hz, 1H), 2.36 (s, 3H).

Compound 200

N-[5-chloro-2-(methylsulfinyl)phenyl]furan-2-sulfonamide

Following General Procedure C, the title compound was prepared from N-[5-chloro-2-(methylthio)phenyl]furan-2-sulfonamide

¹H NMR (600 MHz, acetone-d6) δ 10.85 (br. s., 1H), 7.89 (s, 1H), 7.49-7.59 (m, 2H), 7.28-7.36 (m, 2H), 6.68 (dd, J=1.76, 3.52 Hz, 1H), 2.88 (s, 3H).

Compound 201

N-[5-chloro-2-(methylsulfonyl)phenyl]furan-2-sulfonamide

Following General Procedure D, the title compound was prepared from N-[5-chloro-2-(methylthio)phenyl]furan-2-sulfonamide

¹H NMR (600 MHz, acetone-d6) δ 9.62 (br. s., 1H), 7.90 (d, J=8.51 Hz, 2H), 7.74 (d, J=2.05 Hz, 1H), 7.27-7.48 (m, 2H), 6.70 (dd, J=1.76, 3.52 Hz, 1H), 3.22 (s, 3H).

Compound 202

4-chloro-N-[5-chloro-2-(methylthio)phenyl]-2-fluorobenzenesulfonamide

Following General Procedure B, the title compound (380 mg, 66%) was prepared from 5-chloro-2-methylsulfanyl-phenylamine (273 mg, 1.57 mmol) and 4-chloro-2-fluoro-benzenesulfonyl chloride (360 mg, 1.57 mmol).

¹H NMR (300 MHz, acetone-d6) δ 8.77 (br. s., 1H), 7.84 (t, J=8.06 Hz, 1H), 7.53 (dd, J=1.90, 9.82 Hz, 1H), 7.35-7.48 (m, 3H), 7.25 (dd, J=2.20, 8.35 Hz, 1H), 2.34 (s, 3H).

Compound 203

4-chloro-N-[5-chloro-2-(methylsulfinyl)phenyl]-2-fluorobenzenesulfonamide

Following General Procedure C, the title compound was prepared from 4-chloro-N-[5-chloro-2-(methylthio)phenyl]-2-fluorobenzenesulfonamide

¹H NMR (300 MHz, acetone-d6) δ 10.95 (br. s., 1H), 8.03 (t, J=8.20 Hz, 1H), 7.39-7.61 (m, 4H), 7.28 (dd, J=1.90, 8.35 Hz, 1H), 2.93 (s, 3H).

Compound 204

4-chloro-N-[5-chloro-2-(methylsulfonyl)phenyl]-2-fluorobenzenesulfonamide

Following General Procedure D, the title compound was prepared from 4-chloro-N-[5-chloro-2-(methylthio)phenyl]-2-fluorobenzenesulfonamide

¹H NMR (300 MHz, acetone-d6) δ 9.84 (br. s., 1H), 8.12 (t, J=8.20 Hz, 1H), 7.90 (d, J=8.50 Hz, 1H), 7.46-7.69 (m, 3H), 7.33 (dd, J=1.47, 8.50 Hz, 1H), 3.27 (s, 3H).

Compound 205

3-chloro-N-[5-chloro-2-(methylthio)phenyl]-2-fluorobenzenesulfonamide

Following General Procedure B, the title compound (386 mg, 62%) was prepared from 5-chloro-2-methylsulfanyl-phenylamine (297 mg, 1.71 mmol) and 3-chloro-2-fluoro-benzenesulfonyl chloride (392 mg, 1.71 mmol).

¹H NMR (300 MHz, acetone-d6) δ 8.87 (br. s., 1H), 7.70-7.93 (m, 2H), 7.32-7.47 (m, 3H), 7.20-7.31 (m, 1H), 2.32 (s, 3H).

Compound 206

3-chloro-N-[5-chloro-2-(methylsulfonyl)phenyl]-2-fluorobenzenesulfonamide

Following General Procedure D, the title compound was prepared from 3-chloro-N-[5-chloro-2-(methylthio)phenyl]-2-fluorobenzenesulfonamide

¹H NMR (300 MHz, acetone-d6) δ 7.89-8.04 (m, 1H), 7.69 (d, J=8.50 Hz, 1H), 7.55-7.65 (m, 2H), 7.23-7.37 (m, 1H), 6.72 (dd, J=1.90, 8.64 Hz, 1H), 3.22 (s, 3H).

Compound 207

3-chloro-N-[5-chloro-2-(methylsulfinyl)phenyl]-2-fluorobenzenesulfonamide

Following General Procedure C, the title compound was prepared from 3-chloro-N-[5-chloro-2-(methylthio)phenyl]-2-fluorobenzenesulfonamide

¹H NMR (300 MHz, acetone-d6) δ 7.94-8.04 (m, 1H), 7.83-7.93 (m, 1H), 7.42-7.59 (m, 3H), 7.29 (dd, J=1.90, 8.35 Hz, 1H), 2.93 (s, 3H).

Compound 208

4-chloro-N-{5-chloro-2-[(1H-imidazol-2-ylmethyl)thio]phenyl}-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure A, B, the title compound was prepared from 2-Amino-4-chloro-benzenethiol, 2-chloromethyl-1H-imidazole and 4-chloro-3-trifluoromethyl-benzenesulfonyl chloride. ¹H NMR (300 MHz, CD₃OD) δ 8.06 (d, J=1.76 Hz, 1H), 7.89 (dd, J=2.05, 8.50 Hz, 1H), 7.63-7.78 (m, 2H), 7.45 (d, J=2.05 Hz, 1H), 7.30 (d, J=8.50 Hz, 1H), 7.14 (dd, J=2.34, 8.50 Hz, 1H), 6.73 (s, 1H), 3.83 (s, 2H).

Compound 209

4-chloro-N-{5-chloro-2-[(1H-imidazol-2-ylmethyl)sulfinyl]phenyl}-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure C, the title compound was prepared from 4-chloro-N-{5-chloro-2-[(1H-imidazol-2-ylmethyl)thio]phenyl}-3-(trifluoromethyl)benzenesulfonamide.

¹H NMR (600 MHz, CD₃OD) δ 8.18 (d, 1H), 8.03 (dd, J=1.91, 8.36 Hz, 1H), 7.72 (d, J=8.22 Hz, 1H), 7.41 (s, 2H), 7.20 (d, J=1.76 Hz, 1H), 7.06 (d, J=8.51 Hz, 1H), 6.84 (dd, J=1.91, 8.36 Hz, 1H), 4.76 (d, J=8.22 Hz, 2H).

Compound 210

4-chloro-N-{5-chloro-2-[(1H-imidazol-2-ylmethyl)sulfonyl]phenyl}-3-(trifluoromethyl)benzenesulfonamide

¹H NMR (600 MHz, acetone-d6) δ 8.33 (d, J=1.76 Hz, 1H), 8.18 (dd, J=1.76, 8.22 Hz, 1H), 7.70 (d, J=8.22 Hz, 1H), 7.66 (d, J=8.51 Hz, 1H), 7.58 (d, J=2.05 Hz, 1H), 7.10 (s, 2H), 6.72 (dd, J=1.91, 8.36 Hz, 1H), 4.86 (s, 2H).

Compound 211

4-chloro-N-{5-chloro-2-[(1H-imidazol-4-ylmethyl)thio]phenyl}-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure A, B, the title compound was prepared from 2-Amino-4-chloro-benzenethiol, 4-chloromethyl-1H-imidazole hydrogen chloride and 4-chloro-3-trifluoromethyl-benzenesulfonyl chloride.

¹H NMR (600 MHz, acetone-d6) δ 8.07 (d, J=2.05 Hz, 1H), 7.89-7.97 (m, 2H), 7.77 (d, J=8.51 Hz, 1H), 7.61 (d, J=2.35 Hz, 1H), 7.56 (d, J=8.22 Hz, 1H), 7.16 (dd, J=2.35, 8.22 Hz, 1H), 7.02 (s, 1H), 3.87 (s, 2H).

Compound 212

4-chloro-N-{5-chloro-2-[(1H-imidazol-4-ylmethyl)sulfinyl]phenyl}-3-(trifluoromethyl)benzenesulfonamide

Following General Procedure C, the title compound was prepared from 4-chloro-N-{5-chloro-2-[(1H-imidazol-4-ylmethyl)thio]phenyl}-3-(trifluoromethyl)benzenesulfonamide.

¹H NMR (600 MHz, acetone-d6) δ 8.26 (br. s., 1H), 8.17 (s, 1H), 8.08 (dd, J=1.76, 8.51 Hz, 1H), 7.82 (d, J=8.51 Hz, 1H), 7.47 (br. s., 1H), 7.38 (d, J=8.51 Hz, 1H), 7.30 (s, 1H), 7.09 (d, J=7.92 Hz, 1H), 4.48 (dd, J=2.35, 13.79 Hz, 1H), 4.20 (d, J=14.09 Hz, 1H).

Compound 213

N-{5-chloro-2-[(1H-imidazol-2-ylmethyl)thio]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure A, B, the title compound was prepared from 2-Amino-4-chloro-benzenethiol, 2-chloromethyl-1H-imidazole and 1-benzofuran-2-sulfonyl chloride.

¹H NMR (600 MHz, acetone-d6) δ 7.74 (d, J=7.92 Hz, 1H), 7.64 (d, J=2.35 Hz, 1H), 7.61 (d, J=8.51 Hz, 1H), 7.53 (d, J=8.51 Hz, 1H), 7.46 (td, J=1.17, 7.78 Hz, 1H), 7.41 (s, 1H), 7.33 (t, J=7.48 Hz, 1H), 7.17 (s, 2H), 7.09 (dd, J=2.35, 8.22 Hz, 1H), 4.10 (s, 2H).

Compound 214

N-{5-chloro-2-[(1H-imidazol-2-ylmethyl)sulfinyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound was prepared from N-{5-chloro-2-[(1H-imidazol-2-ylmethypthio]phenyl}-1-benzofuran-2-sulfonamide

¹H NMR (300 MHz, DMSO-d6) δ 7.68 (d, J=7.62 Hz, 1H), 7.51-7.61 (m, 3H), 7.41 (d, J=2.05 Hz, 1H), 7.32-7.40 (m, 1H), 7.21-7.32 (m, 1H), 7.17 (s, 1H), 6.92 (d, J=8.50 Hz, 1H), 6.74 (dd, J=1.90, 8.06 Hz, 1H), 4.89 (d, J=14.07 Hz, 1H), 4.56 (d, J=13.77 Hz, 1H).

Compound 215

N-{5-chloro-2-[(1H-imidazol-2-ylmethyl)sulfonyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound was prepared from N-{5-chloro-2-[(1H-imidazol-2-ylmethypthio]phenyl}-1-benzofuran-2-sulfonamide

¹H NMR (300 MHz, acetone-d6) δ 7.69-7.79 (m, 3H), 7.66 (s, 2H), 7.46-7.54 (m, 1H), 7.41 (s, 2H), 7.24-7.34 (m, 1H), 6.88 (dd, J=1.90, 8.64 Hz, 1H), 5.62 (s, 2H).

Compound 216

N-{5-chloro-2-[(1H-imidazol-4-ylmethyl)sulfinyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound was prepared from N-{5-chloro-2-[(1H-imidazol-4-ylmethypthio]phenyl}-1-benzofuran-2-sulfonamide.

¹H NMR (300 MHz, acetone-d6) δ 8.34 (s, 1H), 7.75 (d, J=7.91 Hz, 1H), 7.60 (d, J=2.05 Hz, 1H), 7.47-7.56 (m, 2H), 7.43 (t, J=7.33 Hz, 1H), 7.24-7.38 (m, 3H), 7.03 (d, J=10.55 Hz, 1H), 4.58 (d, J=14.36 Hz, 1H), 4.24 (d, J=13.77 Hz, 1H)

Compound 217

N-{5-chloro-2-[(1H-imidazol-4-ylmethyl)sulfonyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound was prepared from N-{5-chloro-2-[(1H-imidazol-4-ylmethypthio]phenyl}-1-benzofuran-2-sulfonamide

¹H NMR (300 MHz, acetone-d6) δ 8.20 (br. s., 1H), 7.66-7.81 (m, 3H), 7.35-7.53 (m, 4H), 7.23-7.35 (m, 1H), 6.95 (dd, J=2.05, 8.50 Hz, 1H), 4.87 (s, 2H).

Compound 218

N-[2-({2-[(aminocarbonyl)amino]ethyl}thio)-5-chlorophenyl]-1-benzofuran-2-sulfonamide

Following General Procedure A, B, the title compound was prepared from 2-Amino-4-chloro-benzenethiol, (2-chloro-ethyl)-urea and 1-benzofuran-2-sulfonyl chloride.

1H NMR (300 MHz, acetone-d6) δ 7.77 (d, J=7.91 Hz, 1H), 7.45-7.66 (m, 5H), 7.31-7.42 (m, 1H), 7.22 (dd, J=2.05, 8.50 Hz, 1H), 6.02 (br. s., 1H), 5.40 (br. s., 2H), 3.14 (q, J=6.15 Hz, 2H), 2.84 (t, J=6.45 Hz, 2H).

Compound 219

N-[2-({2-[(aminocarbonyl)amino]ethyl}sulfinyl)-5-chlorophenyl]-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound was prepared from N-[2-({2-[(aminocarbonyl)amino]ethyl}thio)-5-chlorophenyl]-1-benzofuran-2-sulfonamide

¹H NMR (600 MHz, CD₃OD) δ 7.68 (d, J=7.92 Hz, 1H), 7.54 (dd, J=5.28, 8.22 Hz, 2H), 7.42 (t, J=7.92 Hz, 1H), 7.37 (s, 1H), 7.27-7.34 (m, 2H), 7.10 (d, J=6.75 Hz, 1H), 3.58-3.67 (m, 1H), 3.44-3.53 (m, 1H), 3.36-3.43 (m, 1H), 2.98-3.09 (m, 1H).

Compound 220

N-[2-({2-[(aminocarbonyl)amino]ethyl}sulfonyl)-5-chlorophenyl]-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound was prepared from N-[2-({2-[(aminocarbonyl)amino]ethyl}thio)-5-chlorophenyl]-1-benzofuran-2-sulfonamide.

¹H NMR (600 MHz, CD₃OD) δ 7.85 (d, J=8.51 Hz, 1H), 7.80 (d, J=2.05 Hz, 1H), 7.77 (d, J=7.92 Hz, 1H), 7.72 (s, 1H), 7.61 (d, J=8.51 Hz, 1H), 7.52 (t, J=7.34 Hz, 1H), 7.31-7.40 (m, 2H), 3.36-3.47 (m, 4H).

Compound 221

N-(5-chloro-2-{[3-(dimethylamino)propyl]thio}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure A, B, the title compound was prepared from 2-Amino-4-chloro-benzenethiol, (3-chloro-propyl)-dimethyl-amine hydrochloride and 1-benzofuran-2-sulfonyl chloride. ¹H NMR (600 MHz, acetone-d6) δ 7.62-7.72 (m, 2H), 7.49 (d, J=8.22 Hz, 1H), 7.31-7.38 (m, 2H), 7.25 (t, J=7.48 Hz, 1H), 7.18 (s, 1H), 6.69 (dd, J=2.05, 8.22 Hz, 1H), 3.44 (t, J=5.58 Hz, 2H), 3.30 (s, 3H), 3.12 (s, 3H), 2.97 (t, J=6.31 Hz, 2H), 1.96-2.10 (m, 2H)

Compound 222

N-(5-chloro-2-{[3-(dimethylamino)propyl]sulfinyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound was prepared from N-(5-chloro-2-{[3-(dimethylamino)propyl]thio}phenyl)-1-benzofuran-2-sulfonamide.

¹H NMR (600 MHz, acetone-d6) δ 7.67 (d, J=7.92 Hz, 1H), 7.60 (d, J=1.76 Hz, 1H), 7.50 (d, J=8.22 Hz, 1H), 7.41 (d, J=8.22 Hz, 1H), 7.33 (t, J=7.92 Hz, 1H), 7.20-7.28 (m, 2H), 6.83 (dd, J=1.76, 8.22 Hz, 1H), 3.69 (ddd, J=4.99, 8.58, 13.43 Hz, 1H), 3.61 (ddd, J=4.11, 10.71, 14.23 Hz, 1H), 3.48 (ddd, J=5.58, 5.72, 13.35 Hz, 1H), 3.07-3.21 (m, 7H), 2.30-2.42 (m, 1H), 2.16-2.30 (m, 1H).

Compound 223

N-(5-chloro-2-{[3-(dimethylamino)propyl]sulfonyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound was prepared from N-(5-chloro-2-{[3-(dimethylamino)propyl]thio}phenyl)-1-benzofuran-2-sulfonamide.

¹H NMR (600 MHz, acetone-d6) δ 7.63 (d, J=7.63 Hz, 1H), 7.53 (d, J=1.76 Hz, 1H), 7.48 (d, J=8.22 Hz, 1H), 7.43 (d, J=8.22 Hz, 1H), 7.30 (t, J=7.34 Hz, 1H), 7.21 (t, J=7.21 Hz, 1H), 7.17 (s, 1H), 6.74 (dd, J=2.05, 8.22 Hz, 1H), 3.60-3.69 (m, 2H), 3.36-3.48 (m, 1H), 3.20-3.33 (m, 6H), 2.90-3.01 (br. s., 1H), 2.29-2.42 (m, J=6.75 Hz, 1H), 2.08-2.21 (m, 1H).

Compound 224

N-(5-chloro-2-{[3-(dimethylnitroryl)propyl]sulfonyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound was prepared from N-(5-chloro-2-{[3-(dimethylamino)propyl]thio}phenyl)-1-benzofuran-2-sulfonamide.

¹H NMR (600 MHz, acetone-d6) δ 7.79 (s, 1H), 7.70 (d, J=8.51 Hz, 1H), 7.64 (d, J=7.63 Hz, 1H), 7.52 (d, J=8.51 Hz, 1H), 7.29-7.38 (m, 2H), 7.19-7.28 (m, 1H), 6.74 (d, J=8.51 Hz, 1H), 3.74-3.84 (m, 2H), 3.60-3.65 (m., 2H), 3.26 (s, 6H), 2.27-2.39 (m, 2H).

Compound 225

N-(5-chloro-2-{[(2-oxo-1,3-oxazolidin-5-yl)methyl]sulfinyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure A, B, C, the title compound was prepared from 2-Amino-4-chloro-benzenethiol, 5-chloromethyl-oxazolidin-2-one and 1-benzofuran-2-sulfonyl chloride.

1H NMR (600 MHz, acetone-d6) δ 7.62 (dd, J=7.92, 11.15 Hz, 1H), 7.44-7.54 (m, 2H), 7.26-7.44 (m, 3H), 7.20 (ddd, J=7.48, 7.63, 11.30 Hz, 1H), 6.87-7.05 (m, 1H), 6.51 (br. s., 1H), 4.69-5.03 (m, 1H), 3.60 (q, J=8.31 Hz, 1H), 3.45-3.55 (m, 1H), 3.23-3.45 (m, 1H), 3.06-3.17 (m, 1H).

Compound 226

N-(5-chloro-2-{[(2-oxo-1,3-oxazolidin-5-yl)methyl]sulfonyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound was prepared from N-(5-chloro-2-{[(2-oxo-1,3-oxazolidin-5-yl)methyl]thio)phenyl)benzofuran-2-sulfonamide.

¹H NMR (600 MHz, acetone-d6) δ 7.81 (d, J=1.76 Hz, 1H), 7.68 (d, J=8.22 Hz, 2H), 7.54 (d, J=8.22 Hz, 1H), 7.29-7.40 (m, 2H), 7.22-7.29 (m, 1H), 6.79 (br. s., 1H), 6.47 (br. s., 1H), 4.94 (dt, J=6.93, 14.01 Hz, 1H), 4.17 (dd, J=5.58, 14.09 Hz, 1H), 3.96 (dd, J=6.90, 14.23 Hz, 1H), 3.65 (t, J=8.66 Hz, 1H), 3.32-3.47 (m, 1H).

Compound 227

N-(5-chloro-2-{[(2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-yl)methyl]thio}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedures A and B the title compound was prepared from 2-amino-4-chloro-benzenethiol, 6-chloromethyl-1H-pyrimidine-2,4-dione and 1-benzofuran-2-sulfonyl chloride.

¹H NMR (600 MHz, CD₃OD) δ 7.72 (d, J=7.92 Hz, 1H), 7.57 (d, J=8.22 Hz, 1H), 7.45-7.51 (m, 1H), 7.44 (d, J=2.05 Hz, 1H), 7.42 (s, 1H), 7.27-7.37 (m, 2H), 7.09 (br. s., 1H), 5.05 (s, 1H), 3.64 (s, 2H).

Compound 228

N-(5-chloro-2-{[(2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-yl)methyl]sulfinyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound was prepared from N-(5-chloro-2-{[(2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-yl)methyl]thio}phenyl)-1-benzofuran-2-sulfonamide.

¹H NMR (600 MHz, CD₃OD) δ 7.68 (d, J=7.92 Hz, 1H), 7.52 (d, J=8.51 Hz, 1H), 7.49 (d, J=8.51 Hz, 1H), 7.41 (t, J=7.92 Hz, 1H), 7.32-7.37 (m, 2H), 7.27-7.32 (m, 1H), 7.09 (d, J=8.22 Hz, 1H), 5.32 (s, 1H), 4.40 (d, J=13.21 Hz, 1H), 3.89 (d, J=12.91 Hz, 1H).

Compound 229

N-(5-chloro-2-{[(2,6-dioxo-1,2,3,6-tetra hydropyrimidin-4-yl)methyl]sulfonyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound was prepared from N-(5-chloro-2-{[(2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-yl)methyl]thio}phenyl)-1-benzofuran-2-sulfonamide.

¹H NMR (600 MHz, acetone-d6) δ 10.36 (br. s., 1H), 10.15 (br. s., 1H), 7.78 (br. s., 1H), 7.70 (d, J=8.51 Hz, 1H), 7.65 (d, J=7.92 Hz, 1H), 7.42-7.51 (m, 2H), 7.35 (t, J=7.63 Hz, 1H), 7.26 (t, J=7.48 Hz, 1H), 6.87 (d, J=6.75 Hz, 1H), 5.48 (br. s., 1H), 4.76 (br. s., 2H).

Compound 230

N-{2-[(3-aminopropyl)thio]-5-chlorophenyl}-1-benzofuran-2-sulfonamide

Following General Procedure F, G, the title compound was prepared from 2,2′-dithiobis(5-chloroaniline), 1-benzofuran-2-sulfonyl chloride and 3-bromo-propylamine hydrochloride.

¹H NMR (600 MHz, DMSO-d6) δ 8.03 (br. s., 2H), 7.69 (d, J=7.63 Hz, 1H), 7.56 (d, J=8.22 Hz, 1H), 7.37 (t, J=7.78 Hz, 1H), 7.23-7.32 (m, 2H), 7.05-7.20 (m, 2H), 6.60 (br. s., 1H), 3.03 (br. s., 2H), 2.91 (t, J=6.60 Hz, 2H), 1.74-1.92 (m, 2H).

Intermediate 38

(3-Bromo-propyl)-carbamic acid tert-butyl ester

A mixture of 3-bromo-propylamine hydrochloride (523 mg, 2.39 mmol), di-tert-butyl dicarbonate (573 mg, 2.63 mmol), NaOH (1N, 1.5 ml) in MeOH was stirred at rt overnight. The mixture was added water and extracted with EtOAc. The organic layer was washed with brine, dried over Na₂SO₄ and concentrated in vacuo. The residue was purified by column chromatography in silica gel.

¹H NMR (600 MHz, CDCl₃) δ 4.65 (br. s., 1H), 3.38-3.56 (m, 2H), 3.28 (d, J=5.28 Hz, 2H), 1.95-2.14 (m, 2H), 1.45 (br. s., 9H).

Compound 231

N-{2-[(3-aminopropyl)sulfinyl]-5-chlorophenyl}-1-benzofuran-2-sulfonamide

Following General Procedure F, G, C, E the title compound was prepared from 2,2′-dithiobis(5-chloroaniline), 1-benzofuran-2-sulfonyl chloride and (3-bromo-propyl)-carbamic acid tert-butyl ester.

¹H NMR (600 MHz, acetone-d6) δ 7.78 (d, J=7.92 Hz, 1H), 7.63 (d, J=8.51 Hz, 1H), 7.54-7.59 (m, 2H), 7.46-7.52 (m, 2H), 7.32-7.40 (m, 1H), 7.21 (d, J=7.92 Hz, 1H), 4.03-4.14 (m, 1H), 3.88-4.00 (m, 1H), 3.35 (ddd, J=6.97, 7.19, 13.72 Hz, 1H), 3.10 (ddd, J=6.46, 6.60, 13.35 Hz, 1H), 2.16-2.36 (m, 2H).

Compound 232

N-{2-[(3-aminopropyl)sulfonyl]-5-chlorophenyl}-1-benzofuran-2-sulfonamide

Following General Procedure F, G, D, E the title compound was prepared from 2,2′-dithiobis(5-chloroaniline), 1-benzofuran-2-sulfonyl chloride and (3-bromo-propyl)-carbamic acid tert-butyl ester.

¹H NMR (600 MHz, CD₃OD) δ 7.88 (d, J=8.51 Hz, 1H), 7.79 (d, J=7.92 Hz, 1H), 7.72 (d, J=1.76 Hz, 1H), 7.68 (s, 1H), 7.61 (d, J=8.51 Hz, 1H), 7.53 (t, J=7.78 Hz, 1H), 7.40 (t, J=7.63 Hz, 1H), 7.34 (d, J=8.51 Hz, 1H), 3.47 (t, J=7.04 Hz, 2H), 3.02 (t, J=7.63 Hz, 2H), 2.06 (quin, 2H).

Compound 233

N-(5-chloro-2-{[(2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)methyl]sulfinyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure A, B, C, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 5-(chloromethyl)uracil and 1-benzofuran-2-sulfonyl chloride.

¹H NMR (600 MHz, DMSO-d6) δ 10.99 (s, 1H), 10.75 (br. s., 1H), 7.61 (d, J=7.63 Hz, 1H), 7.51 (d, J=8.22 Hz, 1H), 7.32 (t, J=7.48 Hz, 1H), 7.16-7.27 (m, 3H), 7.01-7.10 (m, 1H), 6.86 (br. s., 1H), 6.64-6.79 (m, 1H), 4.02 (d, J=13.21 Hz, 1H), 3.85 (d, J=13.21 Hz, 1H).

Compound 234

N-(5-chloro-2-{[(2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)methyl]sulfonyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure A, B, D, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 5-(chloromethyl)uracil and 1-benzofuran-2-sulfonyl chloride.

¹H NMR (600 MHz, CD₃OD) δ 7.69 (d, J=2.05 Hz, 1H), 7.63-7.67 (m, 2H), 7.44 (t, J=8.36 Hz, 1H), 7.32-7.39 (m, 2H), 7.27 (t, J=7.04 Hz, 1H), 7.18 (s, 1H), 6.82 (d, J=7.92 Hz, 1H), 4.70 (s, 2H).

Compound 235

N-{4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)methyl]-1,3-thiazol-2-yl}acetamide

Following General Procedure A, B, the title compound was prepared from 2-amino-4-chloro-benzenethiol, N-(4-Chloromethyl-thiazol-2-yl)-acetamide and 1-benzofuran-2-sulfonyl chloride.

1H NMR (600 MHz, CD₃OD) δ 7.70 (d, J=7.92 Hz, 1H), 7.49-7.54 (m, 2H), 7.45-7.50 (m, 1H), 7.42 (s, 1H), 7.29-7.36 (m, 2H), 7.11 (dd, J=2.20, 8.36 Hz, 1H), 6.45 (s, 1H), 3.84 (s, 2H), 2.21 (s, 3H).

Compound 236

N-{4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}sulfinyl)methyl]-1,3-thiazol-2-yl}acetamide

Following General Procedure C, the title compound was prepared from N-{4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)methyl]-1,3-thiazol-2-yl}acetamide.

¹H NMR (600 MHz, acetone-d6) δ 10.93 (br. s., 1H), 7.83 (d, J=7.92 Hz, 1H), 7.80 (s, 1H), 7.62-7.67 (m, 2H), 7.49-7.58 (m, 1H), 7.39 (t, J=7.48 Hz, 1H), 7.08-7.22 (m, 2H), 6.74 (s, 1H), 4.29-4.46 (m, 2H), 2.23 (s, 3H).

Compound 237

N-{4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}sulfonyl)methyl]-1,3-thiazol-2-yl}acetamide

Following General Procedure D, the title compound was prepared from N-{4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)methyl]-1,3-thiazol-2-yl}acetamide.

1H NMR (600 MHz, acetone-d₆) δ 10.90 (br. s., 1H), 9.65 (br. s., 1H), 7.81 (d, J=7.34 Hz, 2H), 7.75 (d, J=2.05 Hz, 1H), 7.65 (d, J=8.51 Hz, 1H), 7.60 (s., 1H), 7.51 (s., 1H), 7.38 (t, J=7.19 Hz, 1H), 7.27 (s., 1H), 6.95 (s, 1H), 4.67 (br. s., 2H), 2.21 (s, 3H).

Compound 238

N-(5-chloro-2-{[2-(3,5-dimethyl-1H-pyrazol-4-yl)ethyl]sulfonyl}phenyl)-1-benzofuran-2-sulfonamide

Following General Procedure D, the title compound (53 mg, 38%) was prepared from N-(5-chloro-2-{[2-(3,5-dimethyl-1H-pyrazol-4-yl)ethyl]thio}phenyl)-1-benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 7.79 (d, J=1.76 Hz, 1H), 7.76 (d, J=8.51 Hz, 1H), 7.67 (d, J=7.92 Hz, 1H), 7.57 (d, J=0.59 Hz, 1H), 7.37 (ddd, J=1.17, 7.19, 8.36 Hz, 1H), 7.26-7.31 (m, 1H), 7.20-7.24 (m, 1H), 7.15 (dd, J=1.76, 8.51 Hz, 1H), 3.40-3.50 (m, 2H), 2.60-2.72 (m, 2H), 2.01 (s, 6H).

Compound 239

N-{5-fluoro-2-[(3-nitrobenzyl)sulfinyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure C, the title compound (174 mg, 79%) was prepared from N-(5-fluoro-2-((3-nitrobenzyl)thio)phenyl)benzofuran-2-sulfonamide.

1H NMR (600 MHz, CD₃OD) δ 7.98 (d, J=9.10 Hz, 1H), 7.67 (d, J=7.63 Hz, 1H), 7.49 (br. s., 1H), 7.40 (s, 1H), 7.35 (d, J=8.51 Hz, 1H), 7.26-7.32 (m, 2H), 7.21-7.26 (m, 2H), 7.12 (d, J=7.63 Hz, 1H), 6.74-6.80 (m, 1H), 6.40 (t, J=7.34 Hz, 1H), 4.52-4.64 (m, 2H).

Compound 240

N-{2-[(3-aminobenzyl)sulfinyl]-5-chlorophenyl}-2,4-difluorobenzenesulfonamide

Following General Procedure A, B, C, and K, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 1-bromomethyl-3-nitro-benzene, and 2,4-difluoro-benzenesulfonyl chloride.

¹H NMR (600 MHz, METHANOL-d₄) δ 7.95 (d, J=6.16 Hz, 1H), 7.19-7.30 (m, 3H), 7.11-7.19 (m, 2H), 7.00 (t, J=7.78 Hz, 1H), 6.72 (dd, J=1.47, 7.92 Hz, 1H), 6.61 (s, 1H), 6.44 (d, J=7.04 Hz, 1H), 4.34 (d, J=12.91 Hz, 1H), 4.07 (d, J=12.90 Hz, 1H).

Compound 241

N-[5-chloro-2-(methylsulfonyl)phenyl]-4-isopropylbenzenesulfonamide

Following General Procedure B and D, the title compound was prepared from 5-chloro-2-(methylthio)aniline and 4-isopropyl-benzenesulfonyl chloride.

¹H NMR (600 MHz, CHLOROFORM-d) δ 9.13 (s, 1H), 7.80-7.85 (m, 2H), 7.71-7.76 (m, 2H), 7.34-7.39 (m, 2H), 7.16 (dd, J=2.05, 8.51 Hz, 1H), 2.95 (spt, J=6.90 Hz, 1H), 2.81 (s, 3H), 1.22 (d, J=7.04 Hz, 6H).

Compound 242

N-(5-methoxy-2-((3-nitrobenzyl)thio)phenyl)benzofuran-2-sulfonamide

Following General Procedure B, the title compound (406 mg, 56%) was prepared from 5-methoxy-2-((3-nitrobenzyl)thio)aniline (450 mg, 1.552 mmol) and benzofuran-2-sulfonyl chloride (335 mg, 1.552 mmol) in pyridine (5 ml).

1H NMR (600 MHz, CD₃OD) δ 8.53 (dd, J=1.76, 5.87 Hz, 1H), 7.96 (ddd, J=1.03, 2.27, 8.14 Hz, 1H), 7.70 (d, J=7.92 Hz, 1H), 7.63 (t, J=1.91 Hz, 1H), 7.51 (s, 1H), 7.42 (dd, J=1.17, 8.22 Hz, 1H), 7.24-7.37 (m, 3H), 7.11 (s, 1H), 7.00 (s, 1H), 6.55 (dd, J=2.79, 8.66 Hz, 1H), 3.83 (s, 2H), 3.71 (s, 3H).

Compound 243

N-{5-chloro-2-[(1H-pyrazol-3-ylmethyl)sulfonyl]phenyl}-1-benzofuran-2-sulfonamide

Following General Procedure D and E, the title compound was prepared from tert-butyl 3-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-chlorophenyl}thio)methyl]-1H-pyrazole-1-carboxylate (Compound 22).

¹H NMR (600 MHz, CD₃OD) δ 7.71 (d, J=1.76 Hz, 1H), 7.66 (d, J=7.92 Hz, 1H), 7.51 (d, J=8.51 Hz, 1H), 7.31-7.43 (m, 4H), 7.24-7.29 (m, 1H), 6.79 (d, J=7.04 Hz, 1H), 5.82 (br. s., 1H), 4.99 (br. s., 2H).

Compound 244

N-{2-[(3-aminobenzyl)thio]-5-chlorophenyl}-4-chloro-2-fluorobenzenesulfonamide

Following General Procedure A, B, and K, the title compound was prepared from 2-amino-4-chloro-benzenethiol, 1-bromomethyl-3-nitro-benzene, and 4-chloro-2-fluoro-benzenesulfonyl chloride.

¹H NMR (600 MHz, CHLOROFORM-d) δ 7.84 (t, J=8.22 Hz, 1H), 7.47 (d, J=2.05 Hz, 1H), 7.25 (dt, J=1.03, 8.51 Hz, 1H), 7.17-7.22 (m, 2H), 7.04 (t, J=7.63 Hz, 1H), 6.93 (dd, J=2.35, 8.22 Hz, 1H), 6.58 (dt, J=1.17, 7.92 Hz, 1H), 6.40-6.45 (m, 2H), 3.72 (s, 2H).

Biological Data

HEK-Gqi5 cells stably expressing CCR2 were cultured in (DMEM high glucose, 10% FBS, 1% PSA, 400 μg/ml geneticin and 50 μg/ml hygromycin. Appropriate positive control chemokines (MCP-1, MIP1A or RANTES) was used as the positive control agonist for screening compound-induced calcium activity assayed on the FLIPR^Tetra. The drug plates were prepared in 384-well microplates using the EP3 and the MultiPROBE robotic liquid handling systems. Compounds were synthesized and tested for CCR2 activity.

Table 1 shows activity at CCR2 receptor (IC₅₀) nM

TABLE 1
	CCR2	CCR2 %
Compound Name	IC50 (nM)	ANTAGONISM
4-chloro-N-[5-chloro-2-(methylsulfinyl)phenyl]-3-	14	78
(trifluoromethyl)benzenesulfonamide
4-chloro-N-[5-chloro-2-(methylsulfonyl)phenyl]-3-	64	90
(trifluoromethyl)benzenesulfonamide
4-chloro-N-[5-chloro-2-(methylthio)phenyl]-3-	134	82
(trifluoromethyl)benzenesulfonamide
4-chloro-N-[5-chloro-2-(isopropylthio)phenyl]-3-	379	72
(trifluoromethyl)benzenesulfonamide
4-chloro-N-{5-chloro-2-[(2-hydroxyethyl)thio]phenyl}-3-	153	88
(trifluoromethyl)benzenesulfonamide
4-chloro-N-{5-chloro-2-[(2-hydroxyethyl)sulfinyl]phenyl}-3-	146	101
(trifluoromethyl)benzenesulfonamide
4-chloro-N-{5-chloro-2-[(2-hydroxyethyl)sulfonyl]phenyl}-3-	95	96
(trifluoromethyl)benzenesulfonamide
methyl 3-{[4-chloro-2-({[4-chloro-3-	108	82
(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfinyl}propanoate
4-chloro-N-{5-chloro-2-[(pyridin-2-ylmethyl)thio]phenyl}-3-	199	79
(trifluoromethyl)benzenesulfonamide
4-chloro-N-{5-chloro-2-[(pyridin-3-ylmethyl)thio]phenyl}-3-	94	85
(trifluoromethyl)benzenesulfonamide
4-chloro-N-{5-chloro-2-[(pyridin-2-ylmethyl)sulfinyl]phenyl}-	92	83
3-(trifluoromethyl)benzenesulfonamide
4-chloro-N-{5-chloro-2-[(pyridin-3-ylmethyl)sulfinyl]phenyl}-	112	97
3-(trifluoromethyl)benzenesulfonamide
ethyl {[4-chloro-2-({[4-chloro-3-	141	79
(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfinyl}acetate
3-{[4-chloro-2-({[4-chloro-3-	1033	59
(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]thio}-N-
isopropylpropanamide
3-{[4-chloro-2-({[4-chloro-3-	506	80
(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]thio}-N,N-
dimethylpropanamide
3-{[4-chloro-2-({[4-chloro-3-	1788	93
(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfinyl}-N-
isopropylpropanamide
3-{[4-chloro-2-({[4-chloro-3-	96	89
(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfinyl}-N,N-
dimethylpropanamide
3-{[4-chloro-2-({[4-chloro-3-	797	99
(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfinyl}propanamide
N-[5-chloro-2-(methylsulfinyl)phenyl]benzenesulfonamide	NA	48
3,4-dichloro-N-[5-chloro-2-	44	87
(methylsulfinyl)phenyl]benzenesulfonamide
N-[5-chloro-2-(methylthio)phenyl]thiophene-2-sulfonamide	NA	0
N-[5-chloro-2-(methylsulfinyl)phenyl]thiophene-2-	1113	53
sulfonamide
4-chloro-N-{5-chloro-2-[(3-nitrophenyl)sulfinyl]phenyl}-3-	509	85
(trifluoromethyl)benzenesulfonamide
4-chloro-N-{5-chloro-2-[(3-	107	101
hydroxycyclopentyl)sulfinyl]phenyl}-3-
(trifluoromethyl)benzenesulfonamide
4-chloro-N-{5-chloro-2-[(3-	76	97
hydroxycyclopentyl)sulfonyl]phenyl}-3-
(trifluoromethyl)benzenesulfonamide
4-chloro-N-[5-chloro-2-(ethylthio)phenyl]-3-	193	81
(trifluoromethyl)benzenesulfonamide
4-chloro-N-[5-chloro-2-(ethylsulfinyl)phenyl]-3-	50	78
(trifluoromethyl)benzenesulfonamide
4-chloro-N-[5-chloro-2-(ethylsulfonyl)phenyl]-3-	88	90
(trifluoromethyl)benzenesulfonamide
N-[5-chloro-2-(methylthio)phenyl]-1-benzofuran-2-	26	99
sulfonamide
N-[5-chloro-2-(methylsulfinyl)phenyl]-1-benzofuran-2-	11	98
sulfonamide
N-[5-chloro-2-(methylsulfonyl)phenyl]-1-benzofuran-2-	42	93
sulfonamide
N-[5-chloro-2-(methylthio)phenyl]-4-methyl-3-	680	92
nitrobenzenesulfonamide
4-chloro-N-[5-chloro-2-	406	94
(methylthio)phenyl]benzenesulfonamide
4-chloro-N-[5-chloro-2-(methylthio)phenyl]-3-	453	93
methylbenzenesulfonamide
N-[5-chloro-2-(methylsulfinyl)phenyl]-4-methyl-3-	181	101
nitrobenzenesulfonamide
N-[5-chloro-2-(methylsulfonyl)phenyl]-4-methyl-3-	207	89
nitrobenzenesulfonamide
4-chloro-N-[5-chloro-2-	62	91
(methylsulfinyl)phenyl]benzenesulfonamide
4-chloro-N-[5-chloro-2-	155	98
(methylsulfonyl)phenyl]benzenesulfonamide
4-chloro-N-[5-chloro-2-(methylsulfinyl)phenyl]-3-	44	88
methylbenzenesulfonamide
2-{[4-chloro-2-({[4-chloro-3-	118	92
(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]thio}-N,N-
dimethylacetamide
2-{[4-chloro-2-({[4-chloro-3-	268	100
(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfinyl}-N,N-
dimethylacetamide
2-{[4-chloro-2-({[4-chloro-3-	462	98
(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfonyl}-
N,N-dimethylacetamide
2-{[4-chloro-2-({[4-chloro-3-	329	91
(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfinyl}-N-
methylacetamide
2-{[4-chloro-2-({[4-chloro-3-	469	96
(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfonyl}-N-
methylacetamide
N-{2-[(2-aminoethyl)thio]-5-chlorophenyl}-4-chloro-3-	1067	97
(trifluoromethyl)benzenesulfonamide
N-[5-chloro-2-(methylthio)phenyl]-3-nitro-4-	491	90
(trifluoromethyl)benzenesulfonamide
N-[5-chloro-2-(methylsulfonyl)phenyl]-3-nitro-4-	213	97
(trifluoromethyl)benzenesulfonamide
N-[5-chloro-2-(methylthio)phenyl]-2,4-	NA	87
difluorobenzenesulfonamide
N-[5-chloro-2-(methylsulfonyl)phenyl]-2,4-	354	91
difluorobenzenesulfonamide
N-[5-chloro-2-(methylsulfinyl)phenyl]-2,4-	236	98
difluorobenzenesulfonamide
N-[5-chloro-2-(methylsulfinyl)phenyl]-3-nitro-4-	54	97
(trifluoromethyl)benzenesulfonamide
N-[5-chloro-2-(methylthio)phenyl]-5-methylfuran-2-	70	77
sulfonamide
N-[5-chloro-2-(methylsulfinyl)phenyl]-5-methylfuran-2-	194	76
sulfonamide
N-[5-chloro-2-(methylsulfonyl)phenyl]-5-methylfuran-2-	990	90
sulfonamide
N-[5-chloro-2-(methylthio)phenyl]furan-2-sulfonamide	940	93
N-[5-chloro-2-(methylsulfinyl)phenyl]furan-2-sulfonamide	2318	96
N-[5-chloro-2-(methylsulfonyl)phenyl]furan-2-sulfonamide	345	99
4-chloro-N-[5-chloro-2-(methylthio)phenyl]-2-	25	95
fluorobenzenesulfonamide
3-chloro-N-[5-chloro-2-(methylthio)phenyl]-2-	1924	94
fluorobenzenesulfonamide
3-chloro-N-[5-chloro-2-(methylsulfonyl)phenyl]-2-	116	101
fluorobenzenesulfonamide
3-chloro-N-[5-chloro-2-(methylsulfinyl)phenyl]-2-	61	101
fluorobenzenesulfonamide
4-chloro-N-[5-chloro-2-(methylsulfonyl)phenyl]-2-	171	98
fluorobenzenesulfonamide
4-chloro-N-[5-chloro-2-(methylsulfinyl)phenyl]-2-	85	103
fluorobenzenesulfonamide
N-{2-[(2-aminoethyl)sulfinyl]-5-chlorophenyl}-4-chloro-3-	3531	84
(trifluoromethyl)benzenesulfonamide
4-chloro-N-{5-chloro-2-[(1H-imidazol-2-	190	84
ylmethyl)thio]phenyl}-3-
(trifluoromethyl)benzenesulfonamide
4-chloro-N-{5-chloro-2-[(1H-imidazol-2-	163	109
ylmethyl)sulfinyl]phenyl}-3-
(trifluoromethyl)benzenesulfonamide
4-chloro-N-{5-chloro-2-[(1H-imidazol-2-	249	113
ylmethyl)sulfonyl]phenyl}-3-
(trifluoromethyl)benzenesulfonamide
4-chloro-N-{5-chloro-2-[(1H-imidazol-4-	68	83
ylmethyl)thio]phenyl}-3-
(trifluoromethyl)benzenesulfonamide
4-chloro-N-{5-chloro-2-[(1H-imidazol-4-	158	111
ylmethyl)sulfinyl]phenyl}-3-
(trifluoromethyl)benzenesulfonamide
4-chloro-N-{5-chloro-2-[(1H-imidazol-4-	51	108
ylmethyl)sulfonyl]phenyl}-3-
(trifluoromethyl)benzenesulfonamide
N-{5-chloro-2-[(1H-imidazol-2-ylmethyl)thio]phenyl}-1-	60	93
benzofuran-2-sulfonamide
N-{5-chloro-2-[(1H-imidazol-2-ylmethyl)sulfinyl]phenyl}-1-	1898	108
benzofuran-2-sulfonamide
N-{5-chloro-2-[(1H-imidazol-2-ylmethyl)sulfonyl]phenyl}-1-	1350	109
benzofuran-2-sulfonamide
N-{5-chloro-2-[(1H-imidazol-4-ylmethyl)thio]phenyl}-1-	10	100
benzofuran-2-sulfonamide
N-{5-chloro-2-[(1H-imidazol-4-ylmethyl)sulfinyl]phenyl}-1-	296	108
benzofuran-2-sulfonamide
N-{5-chloro-2-[(1H-imidazol-4-ylmethyl)sulfonyl]phenyl}-1-	81	106
benzofuran-2-sulfonamide
3-({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-	146	100
chlorophenyl}thio)-N,N-dimethylpropanamide
3-({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-	160	104
chlorophenyl}sulfinyl)-N,N-dimethylpropanamide
3-({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-	76	99
chlorophenyl}sulfonyl)-N,N-dimethylpropanamide
N-[2-({2-[(aminocarbonyl)amino]ethyl}thio)-5-	80	103
chlorophenyl]-1-benzofuran-2-sulfonamide
N-[2-({2-[(aminocarbonyl)amino]ethyl}sulfinyl)-5-	1891	64
chlorophenyl]-1-benzofuran-2-sulfonamide
N-[2-({2-[(aminocarbonyl)amino]ethyl}sulfonyl)-5-	1995	68
chlorophenyl]-1-benzofuran-2-sulfonamide
tert-butyl {6-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-	527	82
chlorophenyl}sulfinyl)methyl]pyridin-2-yl}carbamate
N-(2-{[(6-aminopyridin-2-yl)methyl]thio}-5-chlorophenyl)-1-	32	94
benzofuran-2-sulfonamide
N-(2-{[(6-aminopyridin-2-yl)methyl]sulfinyl}-5-	28	99
chlorophenyl)-1-benzofuran-2-sulfonamide
N-(2-{[(6-aminopyridin-2-yl)methyl]sulfonyl}-5-	15	102
chlorophenyl)-1-benzofuran-2-sulfonamide
N-(2-{[(6-amino-1-oxidopyridin-2-yl)methyl]sulfonyl}-5-	264	95
chlorophenyl)-1-benzofuran-2-sulfonamide
N-(5-chloro-2-{[3-(dimethylamino)propyl]thio}phenyl)-1-	2043	106
benzofuran-2-sulfonamide
N-(5-chloro-2-{[3-(dimethylamino)propyl]sulfinyl}phenyl)-1-	NA	81
benzofuran-2-sulfonamide
N-(5-chloro-2-{[3-(dimethylamino)propyl]sulfonyl}phenyl)-1-	NA	96
benzofuran-2-sulfonamide
N-(5-chloro-2-{[3-(dimethylnitroryl)propyl]sulfonyl}phenyl)-	NA	83
1-benzofuran-2-sulfonamide
N-(2-{[4-chloro-2-({[4-chloro-3-	5190	98
(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfonyl}ethyl)acetamide
N-(2-{[4-chloro-2-({[4-chloro-3-	NA	97
(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfinyl}ethyl)acetamide
N-(5-chloro-2-{[(2-oxo-1,3-oxazolidin-5-	2128	79
yl)methyl]sulfinyl}phenyl)-1-benzofuran-2-sulfonamide
N-(5-chloro-2-{[(2-oxo-1,3-oxazolidin-5-	2561	98
yl)methyl]sulfonyl}phenyl)-1-benzofuran-2-sulfonamide
N-(5-chloro-2-{[(2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-	2368	98
yl)methyl]thio}phenyl)-1-benzofuran-2-sulfonamide
N-(5-chloro-2-{[(2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-	NA	62
yl)methyl]sulfinyl}phenyl)-1-benzofuran-2-sulfonamide
N-(5-chloro-2-{[(2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-	NA	70
yl)methyl]sulfonyl}phenyl)-1-benzofuran-2-sulfonamide
N-{2-[(3-aminopropyl)thio]-5-chlorophenyl}-1-benzofuran-	NA	102
2-sulfonamide
N-{2-[(3-aminopropyl)sulfinyl]-5-chlorophenyl}-1-	NA	63
benzofuran-2-sulfonamide
N-{2-[(3-aminopropyl)sulfonyl]-5-chlorophenyl}-1-	NA	82
benzofuran-2-sulfonamide
4-({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-	NA	54
chlorophenyl}sulfinyl)-N,N-dimethylbutanamide
4-({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-	1003	98
chlorophenyl}sulfonyl)-N,N-dimethylbutanamide
5-chloro-N-[5-chloro-2-(methylsulfinyl)phenyl]-1-	655	92
benzofuran-2-sulfonamide
5-chloro-N-[5-chloro-2-(methylsulfonyl)phenyl]-1-	2047	74
benzofuran-2-sulfonamide
N-{5-chloro-2-[(1H-pyrazol-3-ylmethyl)thio]phenyl}-1-	16	99
benzofuran-2-sulfonamide
N-{5-chloro-2-[(1H-pyrazol-3-ylmethyl)sulfinyl]phenyl}-1-	634	99
benzofuran-2-sulfonamide
N-{5-chloro-2-[(1H-pyrazol-3-ylmethyl)sulfonyl]phenyl}-1-	367	102
benzofuran-2-sulfonamide
N-(5-chloro-2-{[(2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-	3077	21
yl)methyl]sulfinyl}phenyl)-1-benzofuran-2-sulfonamide
N-(5-chloro-2-{[(2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-	NA	0
yl)methyl]sulfonyl}phenyl)-1-benzofuran-2-sulfonamide
N-{4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-	848	102
chlorophenyl}thio)methyl]-1,3-thiazol-2-yl}acetamide
N-{4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-	2685	79
chlorophenyl}sulfinyl)methyl]-1,3-thiazol-2-yl}acetamide
N-{4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-	NA	87
chlorophenyl}sulfonyl)methyl]-1,3-thiazol-2-yl}acetamide
N-[5-chloro-2-(methylsulfinyl)phenyl]-4-	934	68
isopropylbenzenesulfonamide
4-bromo-N-[5-chloro-2-	1329	76
(methylthio)phenyl]benzenesulfonamide
N-[5-chloro-2-(methylthio)phenyl]-4-	2032	71
iodobenzenesulfonamide
N-[5-chloro-2-(methylsulfonyl)phenyl]-4-	NA	0
isopropylbenzenesulfonamide
4-bromo-N-[5-chloro-2-	116	94
(methylsulfinyl)phenyl]benzenesulfonamide
N-[5-chloro-2-(methylsulfinyl)phenyl]-4-	258	95
iodobenzenesulfonamide
4-bromo-N-[5-chloro-2-	403	84
(methylsulfonyl)phenyl]benzenesulfonamide
N-[5-chloro-2-(methylsulfonyl)phenyl]-4-	1068	92
iodobenzenesulfonamide
tert-butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-	2425	28
chlorophenyl}thio)methyl]-1,3-thiazol-2-yl}carbamate
N-(2-{[(2-amino-1,3-thiazol-4-yl)methyl]thio}-5-	42	102
chlorophenyl)-1-benzofuran-2-sulfonamide
tert-butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-	2402	101
chlorophenyl}sulfinyl)methyl]-1,3-thiazol-2-yl}carbamate
N-(2-{[(2-amino-1,3-thiazol-4-yl)methyl]sulfinyl}-5-	262	100
chlorophenyl)-1-benzofuran-2-sulfonamide
tert-butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-	NA	72
chlorophenyl}sulfonyl)methyl]-1,3-thiazol-2-yl}carbamate
N-(2-{[(2-amino-1,3-thiazol-4-yl)methyl]sulfonyl}-5-	83	102
chlorophenyl)-1-benzofuran-2-sulfonamide
N-{5-chloro-2-[(pyridin-2-ylmethyl)thio]phenyl}-1-	35	91
benzofuran-2-sulfonamide
N-{5-chloro-2-[(pyridin-3-ylmethyl)thio]phenyl}-1-	22	97
benzofuran-2-sulfonamide
N-{5-chloro-2-[(pyridin-3-ylmethyl)sulfinyl]phenyl}-1-	76	100
benzofuran-2-sulfonamide
N-(5-chloro-2-{[(1-oxidopyridin-3-yl)methyl]sulfinyl}phenyl)-	646	101
1-benzofuran-2-sulfonamide
N-{5-chloro-2-[(pyridin-3-ylmethyl)sulfonyl]phenyl}-1-	32	93
benzofuran-2-sulfonamide
N-(5-chloro-2-{[(1-oxidopyridin-3-	1753	81
yl)methyl]sulfonyl}phenyl)-1-benzofuran-2-sulfonamide
N-{5-chloro-2-[(3-nitrobenzyl)thio]phenyl}-1-benzofuran-2-	NA	63
sulfonamide
N-{5-chloro-2-[(3-methoxybenzyl)thio]phenyl}-1-	651	85
benzofuran-2-sulfonamide
N-(5-chloro-2-{[(5-nitro-1H-pyrazol-3-	NA	91
yl)methyl]thio}phenyl)-1-benzofuran-2-sulfonamide
N-(5-chloro-2-{[(5-nitro-1H-pyrazol-3-	752	94
yl)methyl]sulfinyl}phenyl)-1-benzofuran-2-sulfonamide
N-(2-{[(5-amino-1H-pyrazol-3-yl)methyl]thio}-5-	25	105
chlorophenyl)-1-benzofuran-2-sulfonamide
N-(2-{[(5-amino-1H-pyrazol-3-yl)methyl]sulfinyl}-5-	1381	99
chlorophenyl)-1-benzofuran-2-sulfonamide
N-(2-{[(5-amino-1H-pyrazol-3-yl)methyl]sulfonyl}-5-	1867	98
chlorophenyl)-1-benzofuran-2-sulfonamide
N-(5-chloro-2-{[(1-propyl-1H-imidazol-4-	1283	79
yl)methyl]thio}phenyl)-1-benzofuran-2-sulfonamide
N-(5-chloro-2-{[(1-propyl-1H-imidazol-4-	806	93
yl)methyl]sulfinyl}phenyl)-1-benzofuran-2-sulfonamide
N-(5-chloro-2-{[(1-propyl-1H-imidazol-4-	804	98
yl)methyl]sulfonyl}phenyl)-1-benzofuran-2-sulfonamide
N-{5-chloro-2-[(pyridin-2-ylmethyl)sulfinyl]phenyl}-1-	29	100
benzofuran-2-sulfonamide
N-{5-chloro-2-[(pyridin-2-ylmethyl)sulfonyl]phenyl}-1-	29	100
benzofuran-2-sulfonamide
N-(5-chloro-2-{[(1-oxidopyridin-2-	663	102
yl)methyl]sulfonyl}phenyl)-1-benzofuran-2-sulfonamide
N-(5-chloro-2-{[(1-oxidopyridin-2-yl)methyl]sulfinyl}phenyl)-	846	101
1-benzofuran-2-sulfonamide
tert-butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-	1999	40
chlorophenyl}thio)methyl]pyridin-2-yl}carbamate
N-(2-{[(2-aminopyridin-4-yl)methyl]thio}-5-chlorophenyl)-1-	80	100
benzofuran-2-sulfonamide
tert-butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-	2260	76
chlorophenyl}sulfonyl)methyl]pyridin-2-yl}carbamate
tert-butyl {4-[({2-[(1-benzofuran-2-ylsulfonyl)amino]-4-	2872	29
chlorophenyl}sulfonyl)methyl]-1-oxidopyridin-2-
yl}carbamate
N-(2-{[(2-aminopyridin-4-yl)methyl]sulfinyl}-5-	865	101
chlorophenyl)-1-benzofuran-2-sulfonamide
N-(2-{[(2-aminopyridin-4-yl)methyl]sulfonyl}-5-	364	101
chlorophenyl)-1-benzofuran-2-sulfonamide
N-(2-{[(2-amino-1-oxidopyridin-4-yl)methyl]sulfonyl}-5-	9959	54
chlorophenyl)-1-benzofuran-2-sulfonamide
N-{2-[(3-aminobenzyl)thio]-5-chlorophenyl}-1-benzofuran-	42	92
2-sulfonamide
N-{2-[(3-aminobenzyl)sulfinyl]-5-chlorophenyl}-1-	39	96
benzofuran-2-sulfonamide
N-{2-[(3-aminobenzyl)sulfonyl]-5-chlorophenyl}-1-	23	90
benzofuran-2-sulfonamide
N-{5-chloro-2-[(3-hydroxybenzyl)thio]phenyl}-1-	77	98
benzofuran-2-sulfonamide
N-{5-chloro-2-[(3-hydroxybenzyl)sulfinyl]phenyl}-1-	112	103
benzofuran-2-sulfonamide
N-{5-chloro-2-[(3-hydroxybenzyl)sulfonyl]phenyl}-1-	56	96
benzofuran-2-sulfonamide
3-{[4-chloro-2-({[4-chloro-3-	217	93
(trifluoromethyl)phenyl]sulfonyl}amino)phenyl]sulfonyl}-
N,N-dimethylpropanamide
3-[(4-chloro-2-{[(2,4-	2154	43
difluorophenyl)sulfonyl]amino}phenyl)thio]-N,N-
dimethylpropanamide
N-(2-{[(5-amino-4H-1,2,4-triazol-3-yl)methyl]thio}-5-	32	103
chlorophenyl)-1-benzofuran-2-sulfonamide
N-(2-{[(5-amino-4H-1,2,4-triazol-3-yl)methyl]sulfinyl}-5-	NA	48
chlorophenyl)-1-benzofuran-2-sulfonamide
3-[(4-chloro-2-{[(2,4-	1477	93
difluorophenyl)sulfonyl]amino}phenyl)sulfinyl]-N,N-
dimethylpropanamide
3-[(4-chloro-2-{[(2,4-	1577	89
difluorophenyl)sulfonyl]amino}phenyl)sulfonyl]-N,N-
dimethylpropanamide
3-[(4-chloro-2-{[(4-chloro-2-	771	78
fluorophenyl)sulfonyl]amino}phenyl)thio]-N,N-
dimethylpropanamide
3-[(4-chloro-2-{[(4-chloro-2-	221	99
fluorophenyl)sulfonyl]amino}phenyl)sulfinyl]-N,N-
dimethylpropanamide
3-[(4-chloro-2-{[(4-chloro-2-	211	97
fluorophenyl)sulfonyl]amino}phenyl)sulfonyl]-N,N-
dimethylpropanamide
N-{5-chloro-2-[(2-pyridin-2-ylethyl)thio]phenyl}-1-	713	84
benzofuran-2-sulfonamide
N-(5-chloro-2-{[2-(1H-pyrazol-4-yl)ethyl]sulfinyl}phenyl)-1-	1061	67
benzofuran-2-sulfonamide
N-{5-chloro-2-[(2-pyridin-2-ylethyl)sulfinyl]phenyl}-1-	153	86
benzofuran-2-sulfonamide
N-{5-chloro-2-[(2-pyridin-2-ylethyl)sulfonyl]phenyl}-1-	197	93
benzofuran-2-sulfonamide
N-(5-chloro-2-{[2-(1H-pyrazol-4-yl)ethyl]thio}phenyl)-1-	412	91
benzofuran-2-sulfonamide
N-(5-chloro-2-{[2-(1H-pyrazol-4-yl)ethyl]sulfonyl}phenyl)-1-	570	93
benzofuran-2-sulfonamide
N-(5-chloro-2-{[2-(3,5-dimethyl-1H-pyrazol-4-	279	89
yl)ethyl]thio}phenyl)-1-benzofuran-2-sulfonamide
N-(5-chloro-2-{[2-(3,5-dimethyl-1H-pyrazol-4-	3047	83
yl)ethyl]sulfinyl}phenyl)-1-benzofuran-2-sulfonamide
N-(5-chloro-2-{[2-(3,5-dimethyl-1H-pyrazol-4-	1088	96
yl)ethyl]sulfonyl}phenyl)-1-benzofuran-2-sulfonamide
N-(5-chloro-2-{[(2-fluoropyridin-3-yl)methyl]thio}phenyl)-1-	94	76
benzofuran-2-sulfonamide
N-(5-chloro-2-{[(2-fluoropyridin-3-yl)methyl]sulfinyl}phenyl)-	79	95
1-benzofuran-2-sulfonamide
N-(5-chloro-2-{[(2-fluoropyridin-3-	79	88
yl)methyl]sulfonyl}phenyl)-1-benzofuran-2-sulfonamide
N-{5-chloro-2-[(trifluoromethyl)thio]phenyl}-1-benzofuran-2-	333	92
sulfonamide
N-{5-chloro-2-[(trifluoromethyl)sulfonyl]phenyl}-1-	73	91
benzofuran-2-sulfonamide
N-{5-chloro-2-[(trifluoromethyl)sulfinyl]phenyl}-1-	19	89
benzofuran-2-sulfonamide
N-[2-(benzylthio)-5-chlorophenyl]-1-benzofuran-2-	129	90
sulfonamide
N-[2-(benzylsulfinyl)-5-chlorophenyl]-1-benzofuran-2-	27	85
sulfonamide
N-[2-(benzylsulfonyl)-5-chlorophenyl]-1-benzofuran-2-	34	90
sulfonamide
N-{2-[(3-aminobenzyl)thio]-5-fluorophenyl}-1-benzofuran-2-	55	97
sulfonamide
N-{5-fluoro-2-[(3-nitrobenzyl)sulfinyl]phenyl}-1-benzofuran-	314	96
2-sulfonamide
N-{2-[(3-aminobenzyl)sulfinyl]-5-fluorophenyl}-1-	38	91
benzofuran-2-sulfonamide
N-{5-fluoro-2-[(3-nitrobenzyl)sulfonyl]phenyl}-1-	693	81
benzofuran-2-sulfonamide
N-{2-[(3-aminobenzyl)sulfonyl]-5-fluorophenyl}-1-	22	90
benzofuran-2-sulfonamide
N-{2-[(3-aminobenzyl)thio]-5-methoxyphenyl}-1-	1397	100
benzofuran-2-sulfonamide
N-{2-[(3-aminobenzyl)sulfonyl]-5-methoxyphenyl}-1-	176	107
benzofuran-2-sulfonamide
N-{2-[(3-aminobenzyl)thio]phenyl}-1-benzofuran-2-	676	105
sulfonamide
N-{2-[(3-nitrobenzyl)sulfinyl]phenyl}-1-benzofuran-2-	653	97
sulfonamide
N-{2-[(3-aminobenzyl)sulfinyl]phenyl}-1-benzofuran-2-	58	110
sulfonamide
N-{5-methoxy-2-[(3-nitrobenzyl)sulfinyl]phenyl}-1-	845	84
benzofuran-2-sulfonamide
N-{2-[(3-aminobenzyl)sulfinyl]-5-methoxyphenyl}-1-	85	100
benzofuran-2-sulfonamide
N-{2-[(3-nitrobenzyl)sulfonyl]phenyl}-1-benzofuran-2-	2131	83
sulfonamide
N-{2-[(3-aminobenzyl)sulfonyl]phenyl}-1-benzofuran-2-	41	94
sulfonamide
N-{5-chloro-2-[(4-nitrobenzyl)thio]phenyl}-1-benzofuran-2-	147	82
sulfonamide
N-{2-[(2-aminobenzyl)thio]-5-chlorophenyl}-1-benzofuran-	100	91
2-sulfonamide
N-{5-chloro-2-[(4-nitrobenzyl)sulfonyl]phenyl}-1-	2159	20
benzofuran-2-sulfonamide
N-{2-[(4-aminobenzyl)sulfonyl]-5-chlorophenyl}-1-	90	104
benzofuran-2-sulfonamide
N-{5-chloro-2-[(2-nitrobenzyl)sulfinyl]phenyl}-1-benzofuran-	75	95
2-sulfonamide
N-{2-[(2-aminobenzyl)sulfinyl]-5-chlorophenyl}-1-	115	93
benzofuran-2-sulfonamide
N-{2-[(2-aminobenzyl)sulfonyl]-5-chlorophenyl}-1-	129	98
benzofuran-2-sulfonamide
N-{2-[(3-aminobenzyl)thio]-5-chlorophenyl}-2,4-	3244	64
difluorobenzenesulfonamide
N-{2-[(3-aminobenzyl)thio]-5-chlorophenyl}-4-chloro-2-	2824	88
fluorobenzenesulfonamide
N-{2-[(3-aminobenzyl)sulfonyl]-5-chlorophenyl}-2,4-	718	89
difluorobenzenesulfonamide
N-{2-[(3-aminobenzyl)sulfinyl]-5-chlorophenyl}-2,4-	443	99
difluorobenzenesulfonamide
N-{2-[(3-aminobenzyl)sulfonyl]-5-chlorophenyl}-4-chloro-2-	248	96
fluorobenzenesulfonamide
N-{2-[(3-aminobenzyl)sulfinyl]-5-chlorophenyl}-4-chloro-2-	113	95
fluorobenzenesulfonamide
N-{5-chloro-2-[(pyrimidin-2-ylmethyl)thio]phenyl}-1-	549	100
benzofuran-2-sulfonamide
N-{5-chloro-2-[(pyrimidin-2-ylmethyl)sulfinyl]phenyl}-1-	506	104
benzofuran-2-sulfonamide
N-{5-chloro-2-[(pyrimidin-2-ylmethyl)sulfonyl]phenyl}-1-	151	104
benzofuran-2-sulfonamide
N-{2-[(3-aminobenzyl)thio]-5-	3102	40
chlorophenyl}benzenesulfonamide
N-{2-[(3-aminobenzyl)thio]-5-chlorophenyl}-4-	3894	95
chlorobenzenesulfonamide
N-{2-[(3-aminobenzyl)thio]-5-chlorophenyl}-3-	1458	95
chlorobenzenesulfonamide
N-{2-[(3-aminobenzyl)sulfonyl]-5-	1239	52
chlorophenyl}benzenesulfonamide
N-{2-[(3-aminobenzyl)sulfinyl]-5-	2564	62
chlorophenyl}benzenesulfonamide
N-{2-[(3-aminobenzyl)sulfonyl]-5-chlorophenyl}-4-	421	99
chlorobenzenesulfonamide
N-{2-[(3-aminobenzyl)sulfinyl]-5-chlorophenyl}-4-	159	99
chlorobenzenesulfonamide
N-{2-[(3-aminobenzyl)sulfonyl]-5-chlorophenyl}-3-	246	91
chlorobenzenesulfonamide
N-{2-[(3-aminobenzyl)sulfinyl]-5-chlorophenyl}-3-	159	93
chlorobenzenesulfonamide
N-[2-(benzylthio)-5-cyanophenyl]-1-benzofuran-2-	3837	78
sulfonamide
N-[2-(benzylsulfinyl)-5-cyanophenyl]-1-benzofuran-2-	50	105
sulfonamide
N-[2-(benzylsulfonyl)-5-cyanophenyl]-1-benzofuran-2-	56	95
sulfonamide

Claims

1. A compound having Formula I, its enantiomers, diastereoisomers, hydrates, solvates, crystal forms and individual isomers, tautomers or a pharmaceutically acceptable salt thereof:

2. The compound according to claim 1, wherein: R5 is S.

3. The compound according to claim 1, wherein: R5 is —S(O)—.

4. The compound according to claim 1, wherein: R5 is —S(O)2—.

5. The compound according to claim 1, wherein: R1 is H;R2 is substituted C1-6 alkyl;R5 is —S—, —S(O)—, or —S(O)2—;R6 is 4-chloro-2-fluorophenyl;R17 is H, substituted or unsubstituted C1-6 alkyl or halogen;R18 is H, substituted or unsubstituted C1-6 alkyl or halogen;R7 is H, halogen, CN, —OC1-6 alkyl, substituted or unsubstituted C1-6 alkyl or substituted or unsubstituted C3-8 cycloalkyl; andR8 is H, substituted or unsubstituted C1-6 alkyl, CN or halogen.

6. The compound according to claim 5, wherein: R1 is H;R2 is substituted C1-6 alkyl with ester groups or amide groups or carboxylic acid groups;R5 is —S—, —S(O)—, or —S(O)2—;R6 is 4-chloro-2-fluorophenyl;R17 is H;

7. The compound according to claim 6, wherein: R1 is H;R2 is N,N-diethylpropanamide, methylpropanoate, propanoic acid or N-ethyl-N-methylpropanamide;R5 is —S(O)2—, S or —S(O)—;R6 is 4-chloro-2-fluorophenyl;R7 is chlorine, methyl or fluorine;R17 is H;R18 is H; andR8 is H.

8. The compound according to claim 7, wherein: R5 is —S.

9. The compound according to claim 7, wherein: R5 is —S(O).

10. The compound according to claim 7, wherein: R5 is —S(O)2—.

11. The compound according to claim 1, selected from: methyl 3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl) sulfanyl]propanoate;3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)sulfanyl]propanoic acid;methyl 3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl) sulfonyl]propanoate;methyl 3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl) sulfinyl]propanoate;3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)sulfonyl]propanoic acid;3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)sulfinyl]propanoic acid;3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)sulfanyl]-N-ethyl-N-methylpropanamide;3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)sulfinyl]-N-ethyl-N-methylpropanamide; and3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)sulfonyl]-N-ethyl-N-methylpropanamide.

12. A pharmaceutical composition comprising as active ingredient a therapeutically effective amount of a compound according to claim 1 and a pharmaceutically acceptable adjuvant, diluent or carrier.

13. The pharmaceutical composition according to claim 12 wherein the compound is selected from: methyl 3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl) sulfanyl]propanoate;3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)sulfanyl]propanoic acid;methyl 3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl) sulfonyl]propanoate;methyl 3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl) sulfinyl]propanoate;3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)sulfonyl]propanoic acid;3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)sulfinyl]propanoic acid;3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)sulfanyl]-N-ethyl-N-methylpropanamide;3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)sulfinyl]-N-ethyl-N-methylpropanamide; and3-[(4-chloro-2-{[(4-chloro-2-fluorophenyl)sulfonyl]amino}phenyl)sulfonyl]-N-ethyl-N-methylpropanamide.