An automated, polymer-assisted strategy for the preparation of urea and thiourea derivatives of 15-membered azalides as potential antimalarial chemotherapeutics
series of 15-membered azalide urea and thiourea derivatives has been synthesized and evaluated for their in vitro antimalarial activity against chloroquine-sensitive (D6), chloroquine/pyremethamine resistant (W2) and multidrug resistant (TM91C235) strains of Plasmodium falciparum. We have developed an effective automated synthetic strategy for the rapid synthesis of urea/thiourea libraries of a macrolide
selective, and rapid transformation of primary amines and diamines to isothiocyanates and cyclic thioureas is disclosed. As opposed to established approaches that employ toxic or volatile electrophilic liquids and require reaction control (i.e., slow addition, cooling), this protocol utilizes the bench-stable, solid reagent (Me4N)SCF3 at room temperature. The method is characterized by operational simplicity
A convenient oxidative cyclodesulfurization method toward the synthesis of benzofused nitrogen heterocycles using inexpensive and readily available potassium periodate as an oxidant was developed. Upon treating isothiocyanates with ortho-substituted anilines bearing N,N-, N,O-, and N,S-bis-nucleophiles, followed by an intramolecular cyclization of the in situ generated monothioureas, substituted 2-aminobenzazole
Structure-Based Design, Parallel Synthesis, Structure−Activity Relationship, and Molecular Modeling Studies of Thiocarbamates, New Potent Non-Nucleoside HIV-1 Reverse Transcriptase Inhibitor Isosteres of Phenethylthiazolylthiourea Derivatives
作者:Angelo Ranise、Andrea Spallarossa、Sara Cesarini、Francesco Bondavalli、Silvia Schenone、Olga Bruno、Giulia Menozzi、Paola Fossa、Luisa Mosti、Massimiliano La Colla、Giuseppina Sanna、Marta Murreddu、Gabriella Collu、Bernardetta Busonera、Maria Elena Marongiu、Alessandra Pani、Paolo La Colla、Roberta Loddo
DOI:10.1021/jm049252r
日期:2005.6.1
In this paper we describe our structure-based ligand design, synthetic strategy, and structure-activity relationship (SAR) studies that led to the identification of thiocarbamates (TCs), a novel class of non-nucleoside reverse transcriptase inhibitors (NNRTIs), isosteres of phenethylthiazolylthiourea (PETT) derivatives. Assuming as a lead compound O-[2-(phthalimido)ethyl]phenylthiocarbamate 12, one
Synthesis and SAR of selective small molecule neuropeptide Y Y2 receptor antagonists
作者:Gopi Kumar Mittapalli、Danielle Vellucci、Jun Yang、Marion Toussaint、Shaun P. Brothers、Claes Wahlestedt、Edward Roberts
DOI:10.1016/j.bmcl.2012.04.107
日期:2012.6
Highly potent and selective small molecule neuropeptideYY2receptorantagonists are reported. The systematic SAR exploration of a hit molecule N-(4-ethoxyphenyl)-4-[hydroxy(diphenyl)methyl]piperidine-1-carbothioamide, identified from HTS, led to the discovery of highly potent NPY Y2antagonists 16 (CYM 9484) and 54 (CYM 9552) with IC50 values of 19 nM and 12 nM respectively.