65556-58-3Relevant academic research and scientific papers
New triterpene constituents, foliasalacins A1-A4, B1-B3, and C, from the leaves of Salacia chinensis
Yoshikawa, Masayuki,Zhang, Yi,Wang, Tao,Nakamura, Seikou,Matsuda, Hisashi
, p. 915 - 920 (2008)
Four dammarane-type, three lupane-type, and an oleanane-type triterpenes named foliasalacins A1 (1), A2 (2), A3 (3), A4 (4), B1 (5), B2 (6), B3 (7), and C (8) were isolated from
Lichens and Fungi. Part 17. The Synthesis and Absolute Configuration at C-20 of the (R)- and (S)-Epimers of Some 29-Substituted Lupane Derivatives and of some 30-Norlupan-20-ol Derivatives and the Crystal Structure of (20R)-3β-Acetoxylupan-29-ol.
Corbett, Edward R.,Cong, Aimy N. T.,Wilkins, Alistair L.,Thomson, Ralph, A.
, p. 2051 - 2056 (2007/10/02)
The absolute configurations at C-20 of the (R)- and (S)-aldehydes (10a), (10b), alcohols (11a), (11b), (13a), and (13b) and acids (12a), (12b), (14a), and (14b) derived from 3β-acetoxylup-20(29)-ene (8), via the epoxide (7), have been established by a combination of physical, spectral and X-ray crystallographic procedures, as have the configurations at C-20 of the (R)- and (S)-3β-acetoxy- and 3β-hydroxy-30-norlupan-20-ols (20a), (20b) and (21a), (21b).Anomalies in the literature are identified and rationalized.
