A convergent synthesis of new β-turn mimics by click chemistry
作者:Keunchan Oh、Zhibin Guan
DOI:10.1039/b606185k
日期:——
Alkyne-azide cycloaddition ("click" chemistry) between two peptide strands derivatized with terminal azide and alkyne, respectively, provides an efficient convergentsynthesis of triazole ring-based new beta-turn mimics.
Epoxide 2b is an analog of the synthetic intermediate 2a en route to the polyketide-derived antitumoral naphthoquinone dioncoquinone B (1), isolated from cell cultures of the tropical liana Triphyophyllum peltatum (Dioncophyllaceae). Compound 2b was found to induce strong apoptosis in multiple myeloma cells at a concentration (EC50 = 3.5 mu M), distinctly lower than that of 1 and any related analog, without exerting significant toxicity against normal blood cells. Preliminary studies showed that 2b follows different SAR rules as compared to the naphthoquinones. Among the series of synthesized epoxides, 2b was the most active one and was thus, after biotinylation, subjected to mass spectrometry-based affinity capture experiments aiming at the identification of target proteins. The MS data revealed 2b to address proteins that are associated with stress regulation processes which are critical for multiple myeloma cell survival. (C) 2018 Elsevier Ltd. All rights reserved.
Synthesis of substituted (α-methylene lactams by rhodium catalysed carbonylation of acetylenic amines
作者:Eva M. Campi、J.Michael Chong、W.Roy Jackson、Marcel Van Der Schoot
DOI:10.1016/s0040-4020(01)86969-6
日期:1994.2
Reactions of gamma- and beta-aminoalkynes, (2) and (5) with hydrogen and carbon monoxide in the presence of rhodium catalysts give substituted alpha-methylene-2-piperidinones (7) and 2-pyrrolidinones (11).
Campi Eva M., Chong J. Michael, Jackson W. Roy, Van Der Schoot Marcel, Tetrahedron, 50 (1994) N 8, S 2533-2542
作者:Campi Eva M., Chong J. Michael, Jackson W. Roy, Van Der Schoot Marcel
DOI:——
日期:——
POLYMER CONJUGATE FOR DELIVERY OF A BIOACTIVE AGENT
申请人:POLYACTIVA PTY LTD
公开号:US20170182173A1
公开(公告)日:2017-06-29
The present invention relates in general to polymer-bioactive agent conjugates for delivering a bioactive agent to a subject. The polymer-bioactive agent conjugates contain triazole moieties in the polymer backbone and a bioactive moiety comprising prostaglandin analogues. The present invention also relates to methods for preparing the polymer conjugates using click chemical reactions, to monomer-bioactive agent conjugates suitable for preparing the polymer conjugates, and to pharmaceutical products comprising the polymer conjugates for the treatment of glaucoma.