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Total synthesis of (±)-α,γ-onoceradienedione and lansic acid

✍ Scribed by Mugio Nishizawa; Hisaya Nishide; Yuji Hayashi

Publisher: Elsevier Science
Year: 1984
Tongue: French
Weight: 206 KB
Volume: 25
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)91122-0

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✦ Synopsis

~ummary: Dnsymmetrical onoceranoid triterpenes, .,y-onoceradienedione and lansic acid, have been synthesized effectively by means of mercury(I1) triflate/ amine complex-induced olefin cyclization.

A variety of unsymmetrical onocerane type triterpenes, such as a,Y-onoceradienedione (Il, "* lansic acid (2),* lansiolic acid (32), 3 and three glyco-

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