The Pd-catalyzed arylation of isoalantolactone by deoxyvasicinone and lappaconitine halides occurred with formation mainly of cross-coupling products with the (E)-configuration of the double bond. Another three compounds were isolated from the reaction of isoalantolactone with 6-bromodeoxyvasicinone. These were the lactone diarylation product, a compound with the (Z)-configuration of the double bond, and a product with a shift of the C(11,13) double bond and configuration inversion at C(8). The new compounds are interesting as potential biologically active agents.
脱氧瓦西辛酮和拉帕
康宁盐酸盐对异阿兰醇内酯的
钯催化芳构化主要形成具有(E)构型双键的交叉偶联产物。从异阿兰醇内酯与6-
溴脱氧瓦西辛酮的反应中分离出另外三种化合物。它们分别是内酯二芳构化产物、具有(Z)构型双键的化合物以及C(11,13)双键发生位移且C(8)构型发生反转的产物。这些新化合物作为潜在的
生物活性剂非常有趣。