Practical One-Pot and Large-Scale Synthesis of N-(tert-Butyloxycarbonyl)-3-pyrroline
摘要:
N-(tert-Butyloxycarbonyl)-3-pyrroline was prepared with high purity in large scale starting from cis-1,4-dichloro-2-butene via delepine reaction and subsequent cyclization in the presence of potassium carbonate followed by N-Boc protection in methanol. Judicious selection of base and solvent led to the use of a single solvent, i.e., methanol, for cyclization as well as for N-Boc protection to render the one-pot process from compound 2 more practical and greener than the stepwise version.
Synthesis of Novel Tetrahydroisoquinoline CXCR4 Antagonists with Rigidified Side-Chains
作者:Edgars Jecs、Eric J. Miller、Robert J. Wilson、Huy H. Nguyen、Yesim A. Tahirovic、Brook M. Katzman、Valarie M. Truax、Michelle B. Kim、Katie M. Kuo、Tao Wang、Chi S. Sum、Mary E. Cvijic、Gretchen M. Schroeder、Lawrence J. Wilson、Dennis C. Liotta
DOI:10.1021/acsmedchemlett.7b00406
日期:2018.2.8
potent TIQ15-derived CXCR4 antagonists is reported. In this investigation, the TIQ15 side-chain was constrained to improve its drug properties. The cyclohexylamino congener 15a was found to be a potent CXCR4 inhibitor (IC50 = 33 nM in CXCL12-mediated Ca2+ flux) with enhanced stability in liver microsomes and reduced inhibition of CYP450 (2D6). The improved CXCR4 antagonist 15a has potential therapeutic
[EN] CHEMICAL COMPOUNDS<br/>[FR] COMPOSES CHIMIQUES
申请人:SMITHKLINE BEECHAM CORP
公开号:WO2006020415A1
公开(公告)日:2006-02-23
The present invention provides novel compounds that demonstrate protective effects on target cells from HIV infection in a manner as to bind specifically to the chemokine receptor, and which affect the binding of the natural ligand or chemokine to a receptor such as CXCR4 and/or CCR5 of a target cell.
A novel solid-phase synthesis of cyclic guanidines
作者:Vladimir Y. Vvedensky、Boris V. Rogovoy、Alexander S. Kiselyov、Alexandre V. Ivachtchenko
DOI:10.1016/j.tetlet.2005.10.039
日期:2005.12
We have developed a robust solid-phase approach to cyclic guanidines based on the Staudinger protocol. The synthetic sequence involves the reaction of the immobilized aza-Wittig reagents derived from the respective azidobenzoic acids with bifunctional amines. Convenient isolation and good yields of the desired products (34–84%) along with the diversity of the targeted molecules are distinctive features
The present invention provides compounds that demonstrate protective effects on target cells from HIV infection in a manner as to bind to chemokine receptor, and which affect the binding of the natural ligand or chemokine to a receptor such as CXCR4 of a target cell.