A Convenient Synthesis of N1-Substituted 3,4-Dihydropyrimidin-2(1<i>H</i>)-ones by Cyclocondensation of α-Chlorobenzyl Isocyanates with Ethyl <i>N</i>-alkyl(aryl)-β-aminocrotonates
A new convenient approach to the synthesis of N1-sub-stituted 3,4-dihydropyrimidin-2(1H)-ones was developed using the regioselective cyclocondensation of α-chlorobenzyl isocyanates with ethyl N-alkyl(aryl)-β-aminocrotonates. A number of Nl-aryl and N1-alkyl substituted Biginelli compounds difficult to obtain by other methods were prepared with high yields.
Synthesis and antitubercular activity of N-(2-naphthyl)glycine hydrazide analogs
作者:B. Ramamurthy、M. V. Bhatt
DOI:10.1021/jm00131a002
日期:1989.11
N-(2-Naphthyl)glycine hydrazide analogues were synthesized and tested for possible in vitro antitubercular activity. N-(2-Naphthyl)alanine hydrazide (3), N-methyl-N-(2-naphthyl)glycine hydrazide (5), N-(6-methoxy-2-naphthyl)glycine hydrazide (7), and 3-(2-naphthylamino)butyric acid hydrazide (23) showed potent inhibitory action against Mycobacterium tuberculosis H37Rv in Youman's medium at concentrations ranging from 0.5 to 10.0 micrograms/mL. These compounds showed significant inhibitory action against isonicotinic acid hydrazide and streptomycin-resistant strains of M. tuberculosis. N-(6-Quinolyl)glycine hydrazide (18) and 3-(2-quinolylamino)butyric acid hydrazide (24), which are bioisosteres of compounds 1 and 23, showed loss of antitubercular activity at low concentrations.
Kozlov, N. S.; Sauts, R. D.; Serzhanina, V. A., Doklady Chemistry, 1985, vol. 282, p. 150 - 152
作者:Kozlov, N. S.、Sauts, R. D.、Serzhanina, V. A.
DOI:——
日期:——
DE42276
申请人:——
公开号:——
公开(公告)日:——
Gillis et al., Journal and Proceedings - Royal Society of New South Wales, 1939, vol. 73, p. 258,259,260