A new class of nonhormonal pregnancy-terminating agents. Synthesis and contragestational activity of 3,5-diaryl-s-triazoles
摘要:
A series of 3,5-diaryl-s-triazoles were synthesized and evaluated as postimplantation contragestational agents. The introduction of various substituents (e.g., an o-alkyl chain on one phenyl and a m-alkoxy group on the other) was found to increase the potency. Several compounds with very high pregnancy-terminating activity in both hamsters and rats were obtained. One of these, 3-(2-ethylphenyl)-5-(3-methoxyphenyl)-s-triazole, DL 111 (36), was selected for detailed evaluation in various animal species. A synthetic scheme for the preparation of these compounds and preliminary structure-activity relationships are presented.
Substituent and coordination effects in singlet reactions of 3-diazo-3H-1,2,4-triazoles with substituted benzenes and nitro compounds
作者:J Glinka、D Fiscus、C.B Rao、H Shechter
DOI:10.1016/s0040-4039(00)95476-5
日期:1987.1
3-Diazo-3-1,2,4-triazoles convert to singlet 3-1,2,4-triazol-3-ylidenes which (1) effect directed electrophilic substitutions of benzenes and (2) coordinate with benzenoid substituents and nitro compounds to give decomposition or rearrangement products.
TBHP/TBAI–Mediated simple and efficient synthesis of 3,5-disubstituted and 1,3,5-trisubstituted 1H-1,2,4-triazoles via oxidative decarbonylation of aromatic aldehydes and testing for antibacterial activities
The author has developed a simple, efficient and eco–friendly convenient general method for synthesis of 3,5–disubstituted–1,2,4–triazoles and 1,3,5–trisubstituted–1,2,4–triazoles from 3–monosubstituted–1,2,4–triazoles and 1,3–disubstituted–1,2,4–triazoles respectively using tetrabutylammonium iodide (TBAI) as catalyst and TBHP as oxidant under mid reaction conditions. This method provides structurally