Chemistry of Toona ciliata and Cedrela odorata graft (Meliaceae):: chemosystematic and ecological significance
Chemistry of Toona ciliata and Cedrela odorata graft (Meliaceae):: chemosystematic and ecological significance
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DOI：
10.1351/pac199971061083
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发表时间：
1999-06-01
影响因子：
1.8
通讯作者：
Vieira, PC
中科院分区：
文献类型：
--
作者：
da Silva, MFGF;Agostinho, SMM;Vieira, PC
红椿与Swietenioideae的其他属不同，特别是没有墨西哥红椿组的柠檬苦素。我们对T. ciliata中分离得到了碳骨架完整的柠檬苦素类化合物、A、C、D环完整的B-开环柠檬苦素类化合物和5个新的孕甾烷。后一组化合物迄今已记录在楝亚科的四个属中。因此，楝素成分的差异和孕烷的发现似乎不支持香椿属Swietenioideae的归属。纤毛变种australis中分离出倍半萜、环木菠萝烷、豆甾醇、菜油甾醇、sitostenona、柠檬苦素、apotirucallane、tirucallane和儿茶素。柠檬苦素类化合物对阐明嫁接体对大青虫的诱导抗性的基础没有多大价值。环阿屯烷类和儿茶素可能已经从香椿股票转移到雪松嫁接。
Toona differs from other genera of the Swietenioideae, notably by the absence of limonoids of the mexicanolide group. Our earlier phytochemical studies on T. ciliata, showed the presence of limonoids with intact carbon skeleton, B-seco-limonoids with rings A, C and D intact and five new pregnanes. The latter group of compounds has so far been recorded in four genera of the Melioideae. Thus, the difference in meliacin composition and the finding of pregnanes do not seem to favour the affiliation of Toona to the Swietenioideae: From the stem of Cedrela odorata grafted on T. ciliata var. australis were isolated sesquiterpenes, cycloartanes, stigmasterol, campesterol, sitostenona, limonoids, apotirucallane, tirucallanes and catechin. The limonoids were of little value to clarify the basis of the induced resistance in the graft against Hypsipyla grandella. The cycloartanes and catechin could have been translocated from Toona stock to the Cedrela graft.