Cryptostegia grandiflora R. Br. - syn.Nerium grandiflorum Roxb. - Asclepiadaceae - (Indian) rubber vine, Indischer Gummiwein

Evergreen climbing shrub, 1.50-3m high, native to Madagascar, naturalized in Australia, the Pacific, America; leaves opposite, ovate-elliptic, narrowed at both ends; flowers large, funnel-shaped, showy, pinkish to lilac-purple.

„Cryptostegia grandiflora is highly toxic to farm animals like cows, sheep and goats,… cardiac glycosides are responsible for the toxic effects.“

The leaves contain cardiac glycosides like oleandrigenin 3-O-b-glucopyranosyl-(1→4)-b-cymar- opyranosyl-(1→4)-b-digitoxopyranoside (cryptostigmin I), oleandrigenin 3-O-b-glucopyranosyl-(1→4)-a-rhamnopyranoside (cryptostigmin II), 16-propionylgitoxigenin 3-O-b-glucopyranosyl-(1→4)-a-rhamnopyranoside (cryptostigmin III) and oleandrigenin 3-O-b-glucopyranosyl-(1→6)-b-glucopyranosyl-(1→4)-b-cymaropyranosyl-(1→4)-b-digitoxopyranoside (cryptostigmin IV), subalpinosid (previously isolated from Digitalis subalpina by Lichius et al. 1991) and 16-O-acetyl-digitalinum verum (previously isolated from Addenium obesum (Yamauchi and Abe, 1990).
[Cardiac glycosides from Cryptostegia grandiflora., Kamel, M.S., Assaf, M.H., Abe, Y., Ohtani, K., Kasai, R., Yamasaki, K., Phytochemistry, Vol.58(4), 2001, 537-542]

Miquel, F.A.W., Choix de plantes rares ou nouvelles, cultivées et dessinées dans le jardin botanique de Buitenzorg, t. 8 (1864) [J.E.L. Jung]

Cryptostegia grandiflora, © Forest & Kim Starr, Wikimedia Commons CC BY-SA 3.0

cryptostegia_grandiflora_r._br.txt · Zuletzt geändert: 2017/09/01 13:16 von andreas