6120-71-4Relevant articles and documents
Selective cytotoxicity of oxysterols through structural modulation on rings A and B. Synthesis, in vitro evaluation, and SAR
Carvalho, Jo?o F. S.,Silva, M. Manuel Cruz,Moreira, Jo?o N.,Sim?es, Sérgio,Sá E Melo, M. Luisa
, p. 6375 - 6393 (2011/11/06)
Chemically diverse oxysterols were prepared and evaluated for cytotoxicity, aiming to push forward potency and selectivity. They were tested against seven cancer (HT-29, HepG2, A549, PC3, LAMA-84, MCF-7, and SH-SY5Y) and two noncancerous cell lines (ARPE-
Neighbouring Group Effects. Part 2. Effect of Epoxide on the Hydrolysis of Adjacent Acetate Groups
Ishiguro, Masaji,Saito, Hiromitsu,Ikekawa, Nobuo
, p. 2507 - 2510 (2007/10/02)
The presence of an epoxide at the 4,5-position of a steroid accelerates the hydrolysis of an acetate group at the 3β or 6β-positions.This effect is also observed for a 1α-acetoxy-2β,3β-epoxide.A suitable fixed dipole-dipole orientation between the ester group and the adjacent polar group may be an important factor in the rate acceleration, since this neighbouring effect does not occur when a non-rigid side chain is present.Fliorine or bromine substitution at the 5α-position also enhances the rate of hydrolysis of 6β-acetoxy-group.