Tandem Prins Cyclization for the Stereoselective Synthesis of the 4,5-Diaryl-hexahydropyrano[3,4-<i>c</i>]chromene Skeleton of Calyxins I and J
作者:Basi V. Subba Reddy、Mittapalli Ramana Reddy、Sama Gopal Reddy、Balasubramanyan Sridhar、Singarapu Kiran Kumar
DOI:10.1002/ejoc.201500117
日期:2015.5
A Prins bicyclization strategy for the stereoselective synthesis of trans-fused hexahydropyrano[3,4-c]chromene derivatives in good to excellent yields has been developed. The synthetic versatility of this approach has been demonstrated in the synthesis of calyxin I and J analogues. This is the first example of the synthesis of hexahydropyrano[3,4-c]chromene derivatives from (E)-3-[2-(benzyloxy)phe
已经开发了一种用于立体选择性合成反式稠合六氢吡喃并 [3,4-c] 色烯衍生物的 Prins 双环化策略,收率很好。这种方法的合成多功能性已在花萼 I 和 J 类似物的合成中得到证明。这是从 (E)-3-[2-(苄氧基)苯基]-5-苯基戊-4-en-1-醇 (4b) 和醛类。