Citation: Rui TAN, Qi Tai ZHENG, Cun Heng HE, Xiao Tian LIANG. CARBONIUM CYCLIZATION-STUDIES ON LIGNANS CONTAINING THE DIBENZOCYCLOOCTADIENE SYSTEM.Ⅰ[J]. Chinese Chemical Letters, ;1990, 1(1): 47-48. shu

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

Heng HE Xiao Tian LIANG Institute of Materia Medica Nan-wei Road Beijing 100050

Received Date: 25 August 1989

Schisandrin(1)under the Ritter reaction conditions (conc.H₂SO₄/CH₃CN)gave trace amounts of the expected acetamido derivatives(2 a, 2 b).The main product is 5 a, from intramolecular car-bonium cyclization.
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