Singh et al, Can. J. Chem., 42, 1964, 605-609.* |
Ichiba et al, J. Org. Chem. 43, 1978, 469-472.* |
Skinner et al, JACS, 1953, 75, 5909-5911.* |
Stein et al, JACS, 1956, 78, 6185-6188.-* |
Matjeka et al , J. Labelled Comp. Radiopharm., 23, 1986, pp. 969-980.* |
Taylor et al, J. Org. Chem., 75, 1975, 2321-9.* |
Peichl et al, Arch. Pharm. 317, 1984, 946-951.* |
Wolff, Manfred E. editor, “Burger's Medicinal Chemistry, 4th ed.”, John Wiley, New York, 1980, p. 178.* |
Skinner et al., “Glycyl Derivatives of Aminobarbituric Acids”, Journal of The American Chemical Society, vol. 75, 1953, pp. 5909-5911. |
Singh et al., “Synthesis of 5-Acetamido Substituted Barbiturates”, Canadian Journal of Chemistry, vol. 42, No. 3, 1964, pp. 605-609. |
Stein et al., “Preparation of 1-Alkyluramil-7, 7-diacetic Acids”, Journal of The American Chemical Society, vol. 78, 1956, pp. 6185-6188. |
Falco et al., “Studies on condensed Pyrimidine Systems. IV. Some Thiazolo′5,4-d!pyrimidines”, Journal of The American Chemical Society, vol. 72, 1950, pp. 3203-3205. |
Matjeka et al., “Synthesis of stable isotope-enriched metabolites of theophylline”, J. Labelled Comp. Radiopharm, vol. 23, No. 9, 1986, pp. 969-980. |
Peichl et al., “Ylides of heterocycles, 6. Ylides of barbituric acieds with nicotinic acid derivatives as cationic moieties”, Arch. Pharm. vol. 317, No. 11, 1984, pp. 946-951. |
Ichiba et al., “Synthesis of fervenulin 4-oxide and its conversion to the antibiotics fervenulin and 2-methylfervenulone”, J. Org. Chem., vol. 43, No. 3, 1978, pp. 469-472. |
Talor et al., “Synthesis of the pyrimido ′5,4-e!-as-triazine antibiotics fervenulin and 2-methylfervenulone”, J. Org. Chem. (Joceah); 75; vol. 40 (16), pp 2321-9. |
Chemical Abstracts, vol. 128, No. 18, May 4, 1998, 217352n. |