Three new abietane-type diterpenes, 7alpha,15-dihydroxyabieta-8,11, 13-trien-18-al (1); 15,18-dihydroxyabieta-8,11,13-trien-7-one (2); and 18-nor-4,15-dihydroxyabieta-8,11,13-trien-7-one (3), were isolated from the cones of Larix kaempferi, together with three known diterpenes, abieta-8,11,13-trien-18-yl succinate, 16-nor-15-oxoabieta-8,11,13-trien-18-oic acid, and 7beta-hydroxyabieta-8,11,13-trien-18-oic acid. The structures of 1-3 were determined on the basis of chemical and spectral evidence.

中文翻译：

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落叶松球果锥体的山茱二萜

三个新的松果油型二萜，7alpha，15-dihydroxyabieta-8,11，13-trien-18-al（1）; 15,18-dihydroxyabieta-8,11,13-trien-7-one（2）; 和18-nor-4,15-dihydroxyabieta-8,11,13-trien-7-one（3）与Larix kaempferi圆锥体以及三个已知的二萜abieta-8,11,13-trien一起分离琥珀酸-18-基酯，16-去甲15-氧代松香-8,11,13-trien-18-oic酸和7beta-羟基松香化8,11,13-trien-18-oic酸。1-3的结构是根据化学和光谱证据确定的。