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Indonesian Medicinal Plants. XV. Chemical Structures of Five New Resin-Glycosides, Merremosides a, b, c, d, and e, from the Tuber of Merremia mammosa (Convolvulaceae).

1996; Pharmaceutical Society of Japan; Volume: 44; Issue: 9 Linguagem: Inglês

10.1248/cpb.44.1680

1347-5223

ISAO KITAGAWA, Nam In BAEK, Keiko Kawashima, Yoshihiro Yokokawa, Masayuki YOSHIKAWA, Kazuyoshi Ohashi, Hirotaka SHIBUYA,

Phytochemical compounds biological activities

Five new resin-glycosides, named merremosides a (1), b (2), c (3), d (4), and e (5), were isolated from the tuber of Merremia mammosa (LOUR.) HALLIER f. (Convolvulaceae), an Indonesian medicinal plant. The structures of 1, 2, 3, 4, and 5 have been elucidated on the basis of chamical and physicochemical evidence, including syntheses of (11S)-(+)- and (11R)-(-)-jalapniolic acid (16b and 18b) and the glycosidic acid designated as merremoside i (6).