2006•Acta Botanica YunnanicaRequires access

A new abietane diterpenoid from the rosin of Pinus kesiya var. langbianensis (Pinaceae)

Chen Ya, Ming‐Hua Qiu, Gu Kun, Zhou Lin, Li Zhongrong

Abstract

Szemaoenin,a new abietane diterpenoid with five compounds,has been isolated from the rosin of Pinus kesiya var.langbianensis.Their chemical structures were elucidated as abiet-13(14)-en-8,12-epoxy-18-oic acid (1),abiet-8,11,13-trien-15-hydroxy-18-oic acid (2);pimarol (3a);iso-pimarol (3b);abiet-8,11,13-trien-18-oic acid (4);15-hydroxy abietic acid (5);respectively by spectroscopic means.

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Key concepts: Abietane, Abietic acid, Pinaceae, Rosin, Terpenoid, Resin acid, Chemistry, Diterpene