Steroidal alkaloids from Cryptolepis obtusa.
Two novel diglycosylated steroidal alkaloids of 5 delta-pregnene nucleus, named obtusine-20(R)-O-[beta-thevetopyranosyl-(1-->4)-beta-cyma ropyranoside] and obtusolactam-20(R)-O-[beta-thevetopyranosyl-(1-->4)-beta- cymaropyranoside], together with the known beta-sitosteryl-3-O-beta-glucopyranoside were isolated from the roots of Cryptolepis obtusa N. E. Br.
Paulo
A
A
CECF-Faculty of Pharmacy, University of Lisbon, Portugal.
Jimeno
M L
ML
Gomes
E T
ET
Houghton
P J
PJ
D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D013256:Steroids / Q000737:chemistry / Q000302:isolation & purification*
D000470:Alkaloids; D013256:Steroids