Glycosides of Calotropis procera R.Br. Glycosides and aglycones. 320
作者： F. Brüschweiler , W. Stöcklin , K. Stöckel , T. Reichstein
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摘要: From the latex of Calotropis procera, HESSEet al. [2] had isolated free calotropagenin (8) and six its glycosides. We now obtained three additional compounds: uzarigenin (4), syriogenin [10] (a 3 β, 14α, x-trihydroxy-card-(20:22)-enolide) proceroside. The latter is a new glycoside containing sugar moiety identical or stereoisomeric with those present in gomphoside, calactin calotropin. Its aglycone, not yet known form, contains one (probably secondary) hydroxyl group more than most probably 2α, 3β, 14β, x-tetrahydroxy-card-(20:22)-enolide.
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