Synthesis and biological evaluation of 5-(1-alkoxy-2-haloethyl)-2′-deoxyuridines and related uracil analogues
作者:Rakesh Kumar、Leonard I. Wiebe、E. E. Knaus、Mark L. Tempest
DOI:10.1002/jhet.5570280206
日期:1991.2
A new class of 5-[1-alkoxy-2-iodo(or 2,2-diiodo)ethyl] derivatives of 2′-deoxyuridine and uracil were synthesized by a regiospecific reaction of the C-5 vinyl substituent with iodine monochloride and an alcohol. These compounds were either weak or inactive antiviral and inactive cytotoxic agents.
KUMAR, RAKESH;WIEBE, LEONARD I.;KNAUS, E. E.;TEMPEST, MARK L., J. HETEROCYCL. CHEM., 28,(1991) N, C. 237-240
作者:KUMAR, RAKESH、WIEBE, LEONARD I.、KNAUS, E. E.、TEMPEST, MARK L.
DOI:——
日期:——
Inhibition of Mycobacterial Replication by Pyrimidines Possessing Various C-5 Functionalities and Related 2′-Deoxynucleoside Analogues Using in Vitro and in Vivo Models
作者:Naveen C. Srivastav、Dinesh Rai、Christopher Tse、B. Agrawal、Dennis Y. Kunimoto、Rakesh Kumar
DOI:10.1021/jm100568q
日期:2010.8.26
Tuberculosis (TB) has become an increasing problem since the emergence of human immunodeficiency virus and increasing appearance of drug-resistant strains. There is an urgent need to advance our knowledge and discover a new class of agents that are distinct than current therapies. Antimycobacterial activities of several 5-alkyl, 5-alkynyl, furanopyrimiclines and related 2'-deoxynucleosides were investigated against Mycobacterium tuberculosis. Compounds with 5-arylalkynyl substituents (23-26,33, 35) displayed potent in vitro antitubercular activity against Mycobacterium bovis and Mycobacterium tuberculosis. The in vivo activity of 5-(2-pyridylethyny1)-uracil (26) and its 2'-deoxycytidine analogue, 5-(2-pyridylethynyI)-2'-deoxycytidine (35), was assessed in BA LB/c mice infected with M. tuberculosis (H 37 Ra). Both compounds 26 and 35 given at a dose of 50 mg/kg for 5 weeks showed promising in vivo efficacy in a mouse model, with the 2'-deoxycytidine derivative being more effective than the uracil analogue and a reference drug o-cycloserine. These data indicated that there is a significant potential in this class of compounds.