Citation: Rui TAN Xiao, Tian LIANG. CARBONIUM CYCLIZATION--STUDIES ON LIGNANS CONTAINING THE DIBENZOCYCLOOCTADIENE SYSTEM.Ⅱ[J]. Chinese Chemical Letters, ;1990, 1(1): 49-50. shu

CARBONIUM CYCLIZATION--STUDIES ON LIGNANS CONTAINING THE DIBENZOCYCLOOCTADIENE SYSTEM.Ⅱ

Rui TAN Xiao ,
Tian LIANG

Institute of Materia Medica Nan-wei Road Beijing 100050

Received Date: 25 August 1989

The major products of carbonium cyclization of 1 are 2 and 3;2 is unstable and undergoes aerial oxidation to give 4.Asimilar product(6)from 5 is somehow stabilized by the extra ben-zoyloxy group(or OH)and can be stored without deterioration.
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