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Paper | Regular issue | Vol 43, No. 7, 1996, pp.1521-1527
Published online, 1st January, 1970
DOI: 10.3987/COM-96-7497
Occurrence of Xanthonolignoids in Guttifereous Plants

Munekazu Iinuma*, Hideki Tosa, Toshiyuki Tanaka, Tetsuro Ito, Sigetomo Yonemori, Veliah Chelladurai, Mohammad Aquil, Yoshikazu Takahashi, and Hiroshi Naganawa

*Departmeny of Pharmacognosy, Gifu Pharmaceutical University, 6-1 Mitahora-higashi 5-chome, Gifu 502-8585, Japan

Abstract

Further investigation of the chemical constituents of the Guttifereous plants (Calophyllum inophyllum, C. austroindicym and Harungana madagascariensis) led to isolate two new xanthonolidnoids, named calophyllumins A and B, in addition to two known xanthonolignoids (cadensin C and 6-hydroxycadensis F) and four flavonoids (calophyllic acid, quercetin, quercetin 3-O-rhamnoside and amentoflavone). The structures of these compounds were established by the asids of spectroscopic analysis including 2D nmr technique.