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Title: Chemical constituents of Evolvulus nummularius
Authors: Dinda, Biswanath
Ghosh, Biplab
Arima, Shiho
Sato, Nariko
Harigaya, Yoshihiro
Keywords: Evolvulus nummularius;Convolvulaceae;Steroids;Aliphatic ester;Pentacyclic triterpenes
Issue Date: Mar-2007
Publisher: CSIR
IPC Code: Int.Cl.⁸ C07C
Abstract: Three new compounds, 1-3 together with known compounds, β-sitosterol and its glucoside, stigmasterol, d-mannitol, ursolic acid and oleanolic acid have been isolated from the aerial parts of Evolvulus nummularius. On the basis of their spectroscopic data and chemical study, the structures of the new compounds 1-3 have been established as 3-O-(4-stearoyl-Z-coumaroyl)-stigmast-5, E–22–dien-3β-ol; 16-(E-coumaroyloxy)-palmitic acid and 3β-hydroxy-urs-12-en-29β-oic acid, respectively. Possibly compound 3 is identical with plectranthoic acid, whose structure was wrongly assigned as 3α-hydroxy-urs-12-en-29β-oic acid.
Page(s): 492-498
ISSN: 0376-4699
Appears in Collections:IJC-B Vol.46B(03) [March 2007]

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