The Journal of Organic Chemistry

The sipholanes, a novel group of triterpenes from the marine sponge Siphonochalina siphonella

S Carmely, Y Kashman

Index: Carmely, Shmuel; Kashman, Yoel Journal of Organic Chemistry, 1983 , vol. 48, # 20 p. 3517 - 3525

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Citation Number: 53

Abstract

Eight new squalene-derived triterpenes possessing a hitherto unknown framework have been isolated from the Red Sea sponge Siphonochalina siphonella. The novel skeleton, designated sipholane, consists of a cis-odahydroazulene linked via an ethylene bridge to a trans-decahydrobenzoxepine. The structure of the sipholane skeleton was established by an X-ray diffraction analysis of one of the natural compounds derivatives (16). The structure of ...