From the stem bark of a Madagascan endemic plant, Millettia richardiana Baill., lonchocarpenin and betulinic acid were isolated and their structures established by spectroscopic methods. The analysis of dichloromethane fractions suggested the presence of β-amyrin, lupeol, palmitic acid, linoleic acid and stearic acid. Except for β-amyrin and lupeol, these compounds are described for the first time for the Millettia genus.
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(a) KikuchiH., OhtsukiK., KoyanoT., KowithayakornT., SakaiT., IshibashiM. (2007) Brandisianins A-F, isoflavonoids isolated from Millettia brandisiana in a screening program for death-receptor expression enhancement activity. Journal Natural Products, 70, 1910–1914;(b) Ongoka PR, Banzouzi JT, Poupat C, Ekouya A, Ouamba JM, Moudachirou M. (2008) Steroids isolated from Millettia versicolor Baker (Fabaceae). African Journal of Biotechnology, 7, 1727–1730; (c) Tiabou Tchinda A, Nahar Khan S, Fuendjiep V, Ngandeu F, Ngono Ngane A, Choudhary MI. (2007) α-glycosidase inhibitors from Millettia courani. Chemical and Pharmaceutical Bulletin, 55, 1402–1403; (d) Khalid AS, Waterman PG. (1983) Thonningine-A and thonningine-B: two 3-phenylcoumarins from the seeds of Millettia thonningii. Phytochemistry, 22, 1001–1003; (e) Ngamga D, Fanso Free SNY, Tane P, Fomum ZT. (2007) Millaurine A, a new guanidine alkaloid from seeds of Millettia laurentii. Fitoterapia, 78, 276–277.
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7.
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8.
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9.
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