7788-20-7Relevant academic research and scientific papers
A new lupane-type triterpenoid fatty acid ester and other isolates from Ophiorrhiza shendurunii
Rajan, Renjith,Venkataraman, Ramaswamy,Baby, Sabulal
, p. 2197 - 2203 (2016/09/20)
A new pentacyclic triterpenoid fatty acid ester, lupan-20-ol-3(β)-yl hexadecanoate (1), together with lupan-20-ol-3(β)-yl acetate (2), olean-18-en-3(β)-yl hexadecanoate (3), dotriacontanoic acid (4), stigmasterol (5), rubiadin (6), nonadecanoic acid (7), palmitic acid (8) and camptothecin (9) were isolated from the hexane and chloroform extracts of Ophiorrhiza shendurunii from South India. Structures of the isolates were determined by1H,13C,13C DEPT,1H–1H COSY, HMBC, HSQC, NOESY NMR, FT-IR, DART-MS, ESI-MS, alkaline hydrolysis, derivatisation, GC–MS and HPTLC analyses. O. shendurunii hexane and chloroform extracts showed significant activities against Candida albicans and Fusarium oxysporum. Compounds 1 to 3 showed only moderate antiyeast/antifungal activities.
Lichens and Fungi. XVIII. Extractives from Pseudocyphellaria rubella
Corbett, R. Edward,Cong, Aimy N. T.,Holland, Patrick T.,Wilkins, Alistair L.
, p. 461 - 468 (2007/10/02)
Twenty lupane triterpenoids including five (20RS)-epimeric pairs have been isolated from the chloroform extractives of the lichen Pseudocyphellaria rubella.The utility of g.c.-m.s. procedures in the structural elucidation of the extractives, some of which were complex mixtures is discussed.
