作者:Derek V. Banthorpe、Paul N. Christou
DOI:10.1039/p19810000105
日期:——
isolated from Artemisia tridentata, has been proved to be 1,4,4-trimethyl-6-vinyl-3-oxabicyclo[3.1.0]hexane by an unambiguous synthesis in six steps from 1-chloro-2-methylpropene, and is thus an irregular monoterpene of the santolinyl class. The availability of 3,6,6-trimethyl-5,6-dihydro-2H-pyran as an unexpected minor product of one of the steps allowed an efficient eight-step synthesis from the chloro-compound
从1-氯-2-甲基丙烯经六步明确合成,已证明从蒿蒿中分离出的醚蒿甲醚为1,4,4-三甲基-6-乙烯基-3-氧杂双环[3.1.0]己烷,因此是Santolinyl类的不规则单萜。3,6,6-三甲基-5,6-二氢-2 H-吡喃作为步骤之一的出乎意料的次要产物的可用性允许从(Z)-5-的氯化合物进行有效的八步合成将要进行的亚乙基5,6-二氢-3,6,6-三甲基吡喃-2-酮:这是一种来自菊花的不规则单萜内酯,以前仅通过十五阶段的方法制备。