New sources of steroid sapogenin - XVIII: Four new steroid sapogenins from Semele androgyna
1973
González, Antonio G. | Freire, Raimundo | Salazar, José A. | Hernández, Rosendo | Suárez, Ernesto | Fundación Juan March | Ministerio de Educación y Ciencia (España)
7 pages, 1 table, 1 scheme.-- For Part XVII see A.G. González, R. Freire Barreira, C. García Francisco, J.A. Salazar Rocío and E. Suárez López, An. Quím. 68, 1063 (1972).
Show more [+] Less [-]From the stems and leaves of Semele androgyna L. four new steroid sapogenins have been isolated: isoandrogenin A (Ia) and B (Id), their structures being determined as the 25S- and 25R-isomers of spirost-5-en-1 β, 3β, 25-triol, and androgenin A (IIa) and B (IIc) corresponding to the 25S- and 25R-isomers of (20S, 22S, 25)-furost-5-en-22, 25-epoxy-1 β, 3β, 26-triol.
Show more [+] Less [-]One of us (R.H.) thanks the Ministerio de Educación y Ciencia for a "Formación de Personal Investigador" fellowship. This work was realized within the Programme 1971 conceded by the Foundation Juan March.
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