Claims
- 1. A carboxylic ester of formula ##STR14## having a double bond in one of the positions indicated by the dotted lines and wherein symbol R designates a C.sub.1 -C.sub.6 alkyl radical, X stands for a monovalent radical of formula P(O)(OR.sup.1).sub.2 or C(O)R.sup.2, R.sup.1 represents a C.sub.1 -C.sub.6 alkyl group and R.sup.2 is either a linear or branched alkyl group or a substituted or unsubstituted phenyl radical, and wherein the wavy line represents a C--C bond of cis or trans configuration, or of formula ##STR15## wherein the wavy lines and symbol R are defined as above, and R.sup.0 represents a C.sub.3 -C.sub.6 alkyl radical, preferably branched.
- 2. A carboxylic ester according to claim 1 chosen among the group consisting of:
- methyl 5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-3-(diethoxyphosphoroxy)pent-2-enoate
- methyl 5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-3-propionoxypent-2-enoate,
- methyl 5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-3-(2-methylpropionoxy)pent-2-enoate,
- methyl 5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-3-(2,2-dimethylpropionoxy)-pent-2-enoate,
- methyl 5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-3-benzoyl-oxypent-2-enoate, and
- methyl 7,11-dimethyl-3-(2,2-dimethylpropionoxy)dodeca-2,6,10-trienoate.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2341/92 |
Jul 1992 |
CHX |
|
Parent Case Info
This is a division of application Ser. No. 08/094,679, filed Jul. 20, 1993, now U.S. Pat. No. 5,386,039.
US Referenced Citations (4)
Number |
Name |
Date |
Kind |
3928246 |
Stadler et al. |
Dec 1975 |
|
3989739 |
Eschenmoser et al. |
Nov 1976 |
|
4007211 |
Trost et al. |
Feb 1977 |
|
5334769 |
Ferrero et al. |
Aug 1994 |
|
Non-Patent Literature Citations (2)
Entry |
S. Harring et al., "Terminator Regulated Mechanistic Divergence in BF.sub.3 -MeNO.sub.2 Promoted Cascade Annulations of Gemetrically Defined Trienoate Derivatives", J. Chem. Commun., pp. 503-505 (1992). |
G. Buchi et al., "The Synthesis of Recemic Abrox"; Helvetica Chimica Acta, 72:8, pp. 996-1000 (1989). |
Divisions (1)
|
Number |
Date |
Country |
Parent |
94679 |
Jul 1993 |
|