TETRA-ARYL CYCLOBUTANE INHIBITORS OF ANDROGEN RECEPTOR ACTION FOR THE TREATMENT OF HORMONE REFRACTORY CANCER
申请人:THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS
公开号:US20160229811A1
公开(公告)日:2016-08-11
The present disclosure provides tetra-substituted cyclobutane inhibitors of Androgen Receptor Action, and methods of using such inhibitors, for the treatment of hormone-refractory cancers.
本公开提供了四取代环丁烷抑制剂的雄激素受体作用,并使用这些抑制剂的方法,用于治疗激素难治性癌症。
Regiospecific [2 + 2] photocyclodimerization of trans-4-styrylpyridines templated by cucurbit[8]uril
Addition of HCl accelerated the photocyclodimerization of trans-4-styrylpyridine 1a in methanol and increased the yield of syn-head-to-tail (syn-HT) dimer 2a through the effect of cation-π interactions between the pyridinium ion of one molecule and the phenyl group of the other. We examined the photoirradiation products of derivatives of 1a having alkyl substituents on the phenyl group (1b–1f). The effect of the alkyl substituent on product distribution was rather limited for the photoreaction in MeOH solutions. However, the substituents had a distinct effect on the product distribution for the photoreaction of the inclusion complexes of hydrochloride salts of trans-4-styrylpyridines with cucurbit[8]uril in aqueous solutions. Introducing an alkyl group at the 2- or 3-position of the phenyl group completely shifted the major product from the syn-HT dimer to the syn-head-to-head (syn-HH) dimer. By adjusting the balance of host–guest interactions and cation-p interactions between guest molecules through systematic changes in the substituents on the phenyl ring of trans-4-styrylpyridine, we could change the orientation of the reactant molecules in the host cavity, resulting in a change of the major regioisomer of the photocyclodimerization products.
Water-assisted assembly of (E)-arylvinylpyridine hydrochlorides: effective substrates for solid-state [2+2] photodimerization
作者:Shinji Yamada、Yuka Nojiri
DOI:10.1039/c1cc12572a
日期:——
Water molecules assist the assembly of (E)-arylvinylpyridine hydrochlorides in a head-to-tail and face-to-face fashion by way of N–H⋯O hydrogen bonds in combination with cation–π interactions between the pyridinium and aromatic rings. Photolysis of the pyridinium salt hydrates provided synHT dimers in high yields.