The preparation of functionalized amines and amides using benzotriazole derivatives and organozinc reagents
摘要:
Secondary and tertiary amines 6 are conveniently prepared in good yields by reacting organozinc halides with adducts 4, which are derived from the corresponding amines, aldehydes and benzotriazole. The use of organozinc reagents enables the introduction of nitro, cyano or ester functionalities into amine mainframes. This methodology was also used to prepare functionalized amides 8. (C) 1998 Elsevier Science Ltd. AII rights reserved.
The preparation of functionalized amines and amides using benzotriazole derivatives and organozinc reagents
摘要:
Secondary and tertiary amines 6 are conveniently prepared in good yields by reacting organozinc halides with adducts 4, which are derived from the corresponding amines, aldehydes and benzotriazole. The use of organozinc reagents enables the introduction of nitro, cyano or ester functionalities into amine mainframes. This methodology was also used to prepare functionalized amides 8. (C) 1998 Elsevier Science Ltd. AII rights reserved.
Tyrosine Kinase Inhibitors. 3. Structure-Activity Relationships for Inhibition of Protein Tyrosine Kinases by Nuclear-Substituted Derivatives of 2,2'-Dithiobis(1-methyl-N-phenyl-1H-indole-3-carboxamide)
作者:Gordon W. Rewcastle、Brian D. Palmer、Ellen M. Dobrusin、David W. Fry、Alan J. Kraker、William A. Denny
DOI:10.1021/jm00039a016
日期:1994.6
A series of indole-substituted 2,2'-dithiobis(1-methyl-N-phenyl-1H-indole-3-carboxamides) were prepared and evaluated for their ability to inhibit the tyrosine kinase activity of both the epidermal growth factor receptor (EGFR) and the nonreceptor pp60(v-src) tyrosine kinase. The compounds were synthesized by conversion of appropriate 1-methyloxindoles to 1-methyl-2-indolinethiones with P2S5 followed by subsequent reaction with NaH and phenyl isocyanate and oxidative dimerization of the resulting 2,3-dihydro-N-phenyl-2-thioxo-1H-indole-3-carboxamides. The parent compound and many of the substituted analogues were moderately potent inhibitors of both kinase enzymes, but no clear relationships were seen between substitution on the indole ring and inhibitory activity, While 4-substituted compounds were generally inactive, 5-substituted derivatives with electron-withdrawing groups showed inhibitory activity. However, none of the substituted compounds showed significantly better activity than the unsubstituted parent compound. There was generally a good correlation between activity against the EGFR and pp60(v-src) kinases, but several compounds did show some specificity (>20-fold) of inhibition; 5-Cl and 5-Br derivatives preferentially inhibited pp60(v-src), while the 5-CF3 compound preferentially inhibited EGFR. Selected compounds from the series were found to inhibit the growth of Swiss 3T3 fibroblasts with IC(50)s in the range 2-25 mu M, the most active being 4-substituted derivatives. The compounds inhibited bFGF-mediated protein tyrosine phosphorylation in intact cells more effectively than EGFR- or PDGF-mediated phosphorylation.
Rewcastle Gordon W., Palmer Brian D., Dobrusin Ellen M., Fry David W., Kr+, J. Med. Chem, 37 (1994) N 13, S 2033-2042
作者:Rewcastle Gordon W., Palmer Brian D., Dobrusin Ellen M., Fry David W., Kr+
DOI:——
日期:——
The preparation of functionalized amines and amides using benzotriazole derivatives and organozinc reagents
作者:Alan R. Katritzky、Sonja Strah、Sergei A. Belyakov
DOI:10.1016/s0040-4020(98)00353-6
日期:1998.6
Secondary and tertiary amines 6 are conveniently prepared in good yields by reacting organozinc halides with adducts 4, which are derived from the corresponding amines, aldehydes and benzotriazole. The use of organozinc reagents enables the introduction of nitro, cyano or ester functionalities into amine mainframes. This methodology was also used to prepare functionalized amides 8. (C) 1998 Elsevier Science Ltd. AII rights reserved.