Synthesis of Thioalkyne-Substituted Thiazolidine-2-thiones Using Tris(trimethylsilyl)methyllithium and Carbon Disulfide
作者:Kazem Safa、Maryam Alyari
DOI:10.1055/s-0034-1379253
日期:——
simple one-pot approach to the synthesis of 5-(iodomethyl)thiazolidine-2-thiones via multicomponent reaction of allylamines, carbon disulfide, and iodine under solvent-free conditions is presented. The obtained 5-(iodomethyl)thiazolidine-2-thiones were converted into silyl-protected terminal [(ethynylthio)methyl]-substituted thiazolidine-2-thiones by treatment with lithium 2,2,2-tris(trimethylsilyl)ethanedithioate
Lactam-Based HDAC Inhibitors for Anticancer Chemotherapy: Restoration of RUNX3 by Posttranslational Modification and Epigenetic Control
作者:Misun Cho、Eunhyun Choi、Jae Hyun Kim、Hwan Kim、Hwan Mook Kim、Jang Ik Lee、Ki-Chul Hwang、Hyun-Jung Kim、Gyoonhee Han
DOI:10.1002/cmdc.201300393
日期:2014.3
transcription factor 3 (RUNX3) are regulated by histone deacetylase (HDAC). HDAC inhibition alters epigenetic and posttranslational stability of RUNX3, leading to tumor suppression. However, HDACinhibitors can nonselectively alter global gene expression through chromatin remodeling. Thus, lactam‐based HDACinhibitors were screened to identify potent protein stabilizers that maintain RUNX3 stability by acetylation
Property-Based Optimization of Hydroxamate-Based γ-Lactam HDAC Inhibitors to Improve Their Metabolic Stability and Pharmacokinetic Profiles
作者:Eunhyun Choi、Chulho Lee、Misun Cho、Jeong Jea Seo、Jee Sun Yang、Soo Jin Oh、Kiho Lee、Song-Kyu Park、Hwan Mook Kim、Ho Jeong Kwon、Gyoonhee Han
DOI:10.1021/jm3009376
日期:2012.12.13
Hydroxamate-based HDAC inhibitors have promising anticancer activities but metabolic instability and poor pharmacokinetics leading to poor in vivo results. QSAR and PK studies of HDAC inhibitors showed that a gamma-lactam core and a modified cap group, including halo, alkyl, and alkoxy groups with various carbon chain linkers, improved HDAC inhibition and metabolic stability. The biological properties of the gamma-lactam HDAC inhibitors were evaluated; the compound designated 8f had potent anticancer activity and high oral bioavailability.
Ring-Closing Metathesis of Vinyl Fluorides towards α-Fluorinated α,β-Unsaturated Lactams and Lactones
corresponding ϵ-lactam was also formed in 38 % yield. When N-(2-fluoroallyl) derivatives were used instead of fluoroacryloyl derivatives, six-, seven-, and eight-membered N-heterocycles were obtained in low yields. This method was also used to synthesize fluorinated α,β-unsaturated analogues of pyrrolizidine and indolizidine alkaloids from prolinol, and also to synthesize N-benzyl-3-fluoroquinolone in