General synthesis of 2,5-dihydrothiophenes (3-thiolenes) from diketo sulfides
作者:Juzo Nakayama、Haruki Machida、Masamatsu Hoshino
DOI:10.1016/s0040-4039(00)98357-6
日期:1985.1
The intramolecular reductive coupling reaction of easily accessible diketo sulfides by a low-valenttitaniumreagent [prepared fromtitanium(IV) chloride and zinc powder] provides an efficient general synthesis of 2,5-dihydrothiophenes.
Preparation of 1-phenylthio-1,3-dienes by reaction of 2,5-dihydrothiophenes with benzyne through fragmentation of sulfonium ylide intermediates
作者:Juzo Nakayama、Yuichi Kumano、Masamatsu Hoshino
DOI:10.1016/s0040-4039(01)80633-x
日期:1989.1
reaction of a series of 2,5-dihydrothiophenes with benzyne, generated from 2-carboxybenzenediazonium chloride, affords 1-phenylthio-1,3-dienes in good yields through the fragmentation of sulfoniumylideintermediates.
Based upon hydrophobic feedback approaches, we designed and synthesized novel sulfur-containing ERα modulators (4 and 5) as breast cancer therapeutic drugcandidates. The tetrahydrothiepine derivative 5a showed the highest binding affinity toward ERα because of its high hydrophobicity, and it acted as an agonist toward MCF-7 cell proliferation. The corresponding alkylamino derivative 5d maintained