CYANOGENESIS OF PASSIFLORA-FOETIDA

Five cyanohydrin glycosides with a cyclopentene ring, tetraphyllin A, tetraphyllin B, tetraphyllin B sulphate, deidaclin and volkenin, were isolated from Passiflora a foetida grown from seeds collected on the G alapagos Islands. By contrast, P. foetida collected on Reunion Island contained the valine-derived glycoside linamarin, along with the cyclo pentanoids tetraphyllin B, volkenin and tetraphyllin B sulphate. The c hemical differences between the two populations were accompanied by pr onounced morphological differences. This is the first report of two po pulations of the same species, having different patterns of cyclopenta noid and valine-derived glycosides. (C) 1998 Elsevier Science Ltd. All rights reserved.