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首页> 外文期刊>Chemistry & biodiversity >A New Type of Floral Oil from Malpighia coccigera (Malpighiaceae) and Chemical Considerations on the Evolution of Oil Flowers
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A New Type of Floral Oil from Malpighia coccigera (Malpighiaceae) and Chemical Considerations on the Evolution of Oil Flowers

机译:一种新的花椰菜(Malpighia coccigera)(花椰菜科)花油及其化学成分的研究

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摘要

New,partially acetylated dihydroxy fatty acids could be identified in the floral oil of Malpighia coccigera (Malpighiaceae):7-OAc,3-OH 20:0,7-OAc,3-OH 22:0,9-OAc,3-OH 22:0,9-OAc,S-OH 22:0,3,9-diOAc 22:0,9-OAc,3-OH 24:0,and ll-OAc,5-OH 24:0.The substitution patterns of all hitherto undescribed dihydroxylated and additionally identified monohydroxylated fatty acids are in agreement with a polyketide analogous biosynthesis.Intermediates may be 3-acetoxy fatty acids (C_(16),C_(18),and C20),known from flower secretions of other phylogenetically unrelated plant families.A possible relationship between plant epicuticular wax and floral oil biosynthesis is discussed.It may explain why an independent but convergent development of oil flowers and flower oils in unrelated plant families was possible.
机译:新的,部分乙酰化的二羟基脂肪酸可以在西洋榄(Malpighiaceae)的花油中鉴定出来:7-OAc,3-OH 20:0,7-OAc,3-OH 22:0,9-OAc,3-OH 22:0,9-OAc,S-OH 22:0,3,9-diOAc 22:0,9-OAc,3-OH 24:0和ll-OAc,5-OH 24:0。迄今未描述的所有二羟基化和额外鉴定的单羟基化脂肪酸中的一个与聚酮类似生物合成相符。中间体可能是3-乙酰氧基脂肪酸(C_(16),C_(18)和C20),从其他系统发育的花分泌物中已知讨论了植物表皮蜡与植物油生物合成之间的可能关系,这可能解释了为什么无关植物家族中油花和花油的独立但会聚发展是可能的。

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