Convergent synthesis of a polyol chain with 4-acetoxy-1,3-dioxanes using a 1,1-bis((trimethylsilyl)methyl)ethene linchpin
作者:Scott D. Rychnovsky、Olga Fryszman、Uday R. Khire
DOI:10.1016/s0040-4039(98)80014-2
日期:1999.1
1,1-bis((trimethylsilyl)methyl)ethene, was used as a linchpin to join two different 4-acetoxy-1,3-dioxanes. These couplings produce anti-diols, and were used to prepare a segment of the roflamycoin polyol. The anti-diol selectivity normally observed on coupling 4-acetoxy-1,3-dioxanes was found to be a function of the C2 acetal substituent, and tert-butyl was superior to methyl.
对称的双亲核试剂1,1-双((三甲基甲硅烷基)甲基)乙烯用作连接两个不同的4-乙酰氧基-1,3-二恶烷的关键。这些偶联物产生抗二醇,并用于制备roflamycoin多元醇的链段。发现通常在偶合4-乙酰氧基-1,3-二恶烷上观察到的抗二醇选择性是C2缩醛取代基的函数,并且叔丁基优于甲基。