We report the first semisynthesis of the natural insect antifeedant azedarachol. The synthesis features the employment of pregnanetriol, a degradative product of the resource natural product tigogenin, as the starting material, the symbiotic reaction involving the mutually‐promoting elimination of toluene‐sulfonate and deprotection of acetonide, and the controllable reactions between the C16‐OH and
我们报告了天然昆虫拒食性阿扎达拉胆的第一个半合成。合成过程以原料
天然产物tigogenin的降解产物孕烯醇为原料,共生反应涉及相互促进的甲
苯磺酸盐的消除和乙酰胺的脱保护,以及C16-OH之间的可控反应以及孕烷16,20
-二醇中的C20-OH。