Journal of Natural Products 1993-Nov
Bisbenzylisoquinoline alkaloids from Cyclea barbata.
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概要
Continuing studies of the alkaloidal fraction from the roots of Cyclea barbata afforded two new bisbenzylisoquinoline alkaloids, namely, (-)-2'-norlimacine [1] and (+)-cycleabarbatine [2]. The known (+)-tetrandrine-2'-beta-N-oxide [3], for which the configuration of the N-oxide function is now assigned, was identified, as were (+)-berbamine, (-)-repandine, (+)-cycleanorine, (+)-daphnandrine, (-)-curine, (+)-coclaurine, and (-)-N-methylcoclaurine.
