SILICON COMPOUNDS

摘要

A compound of formula (I) wherein one of R<1> and R<2> is -Si(R)3, and the other is hydrogen or -Si(R)3; or R<1> is a bond, R<2> is -Si(R)2- or -Si(R)2 -O-Si(R)2-, and R<1>0-CH2-CH-CH-OR<2> taken together form a ring; R<3> and R<4> are the same or different and are each halogen; and each R is the same or different and is alkyl, aryl, cycloalkyl or heterocycloalkyl; or a pharmaceutically acceptable salt thereof.