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Euphane triterpene

Euphane triterpenes Schinus molle SiOj T - AcOEt - AcOH Anisaldehyde reagent Qualitative identification 52 n 3"... [Pg.262]

GR133487 (5,5-rra/is-fused cyclic lactone euphane triterpene) Lantana camara (Verbenaceae) a-Chymotrypsin (10 nM), Factor Xla (1 pM), Plasmin (6 pM), a-Thrombin (4 nM), Trypsin (120 nM) [112]... [Pg.586]

EUPHANE TRITERPENE BISDESMOSIDE AND TRIDESMOSIDES FROM RHOlPTELEA CHILIANTHA... [Pg.186]

Abstract—Four triterpene tridesmosides rhoiptelesides A D (1 4) and a triterpene bisdesmoside rhoipteleside E (5) were isolated from Rhoiptelea chiliantha Diels et Hwd.-Mazz. (Rhoipteleaceae). Their structures were elucidated on the basis of extensive analyses of ID and 2D-NMR spectroscopic data and chemical reactions. Rhoiptelesides represent the first example of the glycoside of euphane-type triterpene. ... [Pg.186]

The euphane and tirucallane triterpenes differ from the lanostanes only in having the opposite stereochemical dispositions at C13, C14, and Ci7 and are themselves epimeric at C20 384). The stereochemistry is considered to be a consequence of enzymatic cyclization of squalene epoxide (305) from a chair, chair, chair conformation (Scheme 29). The two stereoisomeric forms arise from 17->20 hydrogen shift to the dia-stereotopic faces of the carbonium ion at C20. ... [Pg.182]

See other pages where Euphane triterpene is mentioned: [Pg.584]    [Pg.584]    [Pg.586]    [Pg.93]    [Pg.584]    [Pg.584]    [Pg.586]    [Pg.93]    [Pg.41]    [Pg.186]    [Pg.187]    [Pg.187]    [Pg.775]    [Pg.39]    [Pg.187]   
See also in sourсe #XX -- [ Pg.41 ]



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