Triterpenoid saponins from Echinopsis macrogona (Cactaceae).
Triterpene saponins, pachanosides C1, E1, F1 and G1 (1-4), and bridgesides A1, C1, C2, D1, D2, E1 and E2 (5-11) were isolated from Echinopsis macrogona. Compounds 1-4 were saponins with pachanane type triterpene saponins, while the others (5-11) were oleanane type triterpene saponins. While the aglycones of 2-4 and 8-11 were hitherto unknown, the structure of pachanol C was revised in this paper. Their structures were elucidated on the basis of chemical and physicochemical evidence.
Department of Pharmacognosy and Phytochemistry, Meiji Pharmaceutical University, Tokyo, Japan.
Sachie
S
Okazaki
Kaoru
K
Kinoshita
Satoru
S
Ito
Kiyotaka
K
Koyama
Hiroshi
H
Yuasa
Kunio
K
Takahashi
D029421:Cactaceae / Q000737:chemistry*; D007564:Japan; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
D012503:Saponins; D014315:Triterpenes