Abstract Vinyl-substituted 1,3,4-oxadiazoles can be efficiently synthesized through acylation, cyclocondensation, and oxidation–elimination reaction from polystyrene-supported α-selenopropionicacid and acid hydrazides. This new solid-phaseorganicsynthesis method could provide the target compounds in good yield and purity, with advantages of decreased volatility and simplification of workup procedure
metabolically labile ester/amide function. We then further replaced the oxadiazole ring with a series of five-membered heterocycles and finally combined the most promising structural features. All the new derivatives were tested in vitro for antimalarial as well as antileishmanial activity. We identified two very promising new lead compounds, endowed with submicromolar antileishmanial activity and nanomolar
A facile route for the synthesis of vinyl-substituted 1,3,4-oxadiazoles
作者:Santosh P. Pardeshi、Sachin S. Patil、Amar A. Patil、Vivek D. Bobade
DOI:10.1007/s11164-012-0852-y
日期:2013.9
An efficient synthesis of vinyl-substituted 1,3,4-oxadiazoles using o -nitrophenyl sulfoxide precursor via syn -elimination reaction using sodium acetate in THF is described. This method is cost effective as it uses cheap o -nitrothiophenol and can be used in the synthesis of vinyl intermediates during synthesis of bioactive compounds, which avoids the use of any toxic metals.
Cyclic Amine Compound and Use Thereof for the Prophylaxis or Treatment of Hypertension
申请人:Kuroita Takanobu
公开号:US20100121048A1
公开(公告)日:2010-05-13
The present invention relates to a compound represented by the formula: (I) wherein ring A is a 5- or 6-membered aromatic heterocycle optionally having substituent (s); U, V and W are each independently C or N, provided that when any one of U, V and W is N, then the others should be C; Ra and Rb are each independently a cyclic group optionally having substituent(s), a C
1-10
alkyl group optionally having substituent(s), a C
2-10
alkenyl group optionally having substituent(s), or a C
2-10
alkynyl group optionally having substituent(s); X is a bond, or a spacer having 1 to 6 atoms in the main chain; Y is a spacer having 1 to 6 atoms in the main chain; Rc is a hydrocarbon group optionally containing heteroatom(s) as the constituting atom(s), which optionally has substituent(s); m and n are each independently 1 or 2; and ring B optionally further has substituent(s), or a salt thereof. The compound of the present invention has excellent renin inhibitory activity, and thus is useful as an agent for the prophylaxis or treatment of hypertension, various organ damages attributable to hypertension, and the like.
Polynuclear nonfused bis(1,3,4-oxadiazole)-containing systems
作者:L. I. Vereshchagin、A. V. Petrov、V. N. Kizhnyaev、F. A. Pokatilov、A. I. Smirnov
DOI:10.1134/s1070428006070219
日期:2006.7
Nonfused bis-1,3,4-oxadiazoles were synthesized by reaction of 5-substituted mono- and bis-tetrazoles with mono- and dicarboxylic acid chlorides. The results of kinetic studies showed that the transformation of tetrazoles into 1,3,4-oxadiazoles is accelerated by I to 2 orders of magnitude on addition of a catalytic amount of dimethylformamide, triethylamine, or pyridine.