Stereo-conserved synthesis of syn-diarylheptanoids, active principles of Zingiber, starting from d-glucose
作者:Sandeep Bhosale、Vinod P. Vyavahare、Uppuleti Viplava Prasad、Venkata P. Palle、Debnath Bhuniya
DOI:10.1016/j.tetlet.2011.04.097
日期:2011.6
syn-diarylheptanoids, for example, 2, 3, 4, and 5b starting from d-glucose as a chiral pool. The 3-(R), 5-(S)-syn-diol stereochemistry present in these heptanoids was obtained after conserving C2 and C4 stereochemistry of d-glucose during the course of synthetic transformation. The key features of this synthetic strategy include: (i) conversion of d-glucose to a known chiral template 6 armored with the required
一个高效和立体受控合成策略已经被开发,以访问SYN -diarylheptanoids,例如,2 , 3,4 ,和图5b从起始d -葡萄糖作为手性池。这些庚类化合物中存在的3-(R),5-(S)-顺式-二醇立体化学是在合成转化过程中保持d-葡萄糖的C2和C4立体化学后获得的。该合成策略的关键特征包括:(i)将d-葡萄糖转化为已知的手性模板6,该模板具有所需的1,3-装甲。顺式二醇立体化学以及两个末端醛官能团,用于构建定制的“二芳基翅膀”;(ii)通过在C5-醛上的初始Wittig烯化反应将6转化为7;(ⅲ)利用半缩醛的7作为共同中间体使用适当选择的叶立德获得经由第二Wittig反应的个体heptanoids在其异头中心。