Triterpenoid glycosides and a triterpene from Ilex brevicuspis.
Two saponins and a sapogenin were isolated from the leaves of Ilex brevicuspis. Their structures were established by means of spectroscopic methods as brevicuspisaponin 1 (3-O-alpha-L-arabinopyranosyl-20(S)-19 alpha,24-dihydroxyursolic acid), brevicuspisaponin 2 (3-O-alpha-L-arabinopyranosyl-20(S)-19 alpha,23,24-trihydroxyursolic acid) and 23-methylester of 20(S)-3 beta,19 alpha,24-trihydroxyurs-12-en-23,28-dioic acid.
Taketa
A T
AT
Kekulé-Institut für Organische Chemie und Biochemie, Rheinischen Friedrich-Wilhelms-Universität, Bonn, Germany.
Schmittmann-Schlager
T
T
Guillaume
D
D
Gosmann
G
G
Schenkel
E P
EP
D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D018515:Plant Leaves / Q000737:chemistry; D016339:Spectrometry, Mass, Fast Atom Bombardment; D014197:Trees / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
D006027:Glycosides; D014315:Triterpenes