Antihyperglycemic activity of novel substituted 3H-1,2,3,5-oxathiadiazole 2-oxides
摘要:
A series of substituted 3H-1,2,3,5-oxathiadiazole-2-oxides (6) was prepared and tested for antihyperglycemic activity in the db/db mouse, a model for type 2 (non-insulin dependent) diabetes mellitus. The oxathiadiazoles 6 were synthesized by a two-step sequence: treatment of a substituted acetonitrile (4) with hydroxylamine to give the corresponding amidoxime (5) and cyclization with thionyl chloride to yield 6. In terms of potency, the 2-naphthalenylmethyl group (as in compound 3) was found to be the optimal substituent in this series. Compound 3 was approximately 5 times more potent than ciglitazone (1).
Organocatalytic Asymmetric Formal Aza‐[3+3]Cyclo‐additions of 3‐Aminobenzofuran with
<i>α,β</i>
‐Unsaturated Aldehydes
作者:Xiang‐Feng Ding、Ruo‐Heng Su、Wu‐Lin Yang、Wei‐Ping Deng
DOI:10.1002/adsc.201800921
日期:2018.11.5
An organocatalyticasymmetricformal aza‐[3+3]cycloaddition of readily available N‐Tosyl‐3‐aminobenzofuran with α,β‐unsaturated aldehydes was developed for the first time. This method enables the facile synthesis of biologically active and synthetically challenging polysubstituted fused benzofuran derivatives bearing two stereocenters in high yields with excellent diastereo‐, and enantioselectivity
Attempts to prepare azido-substituted aurones via a copper-catalyzed azidation failed to afford the desired product, but instead resulted in an unusual triazole formation reaction. Further efforts noted that copper was not required for this reaction, but simply thermal treatment with sodium azide in a polar aprotic solvent. A wide range of substitution patterns were tolerated in this reaction to afford
Novel substituted 3H-1,2,3,5-oxathiadiazole 2-oxides useful as
申请人:American Home Products Corporation
公开号:US04895860A1
公开(公告)日:1990-01-23
This invention relates to novel substituted 3H-1,2,3,5-oxathiadiazole 2-oxides, to the processes for their preparation, to methods for using the compounds, and to pharmaceutical compositions thereof. The compounds have pharmaceutical properties which render them beneficial for the treatment of diabetes mellitus and associated conditions.
A golden opportunity: benzofuranone modifications of aurones and their influence on optical properties, toxicity, and potential as dyes
作者:Joza Schmitt、Scott T Handy
DOI:10.3762/bjoc.15.171
日期:——
Aurones are a small subclass of the flavonoid family known primarily for their unusual structure and the golden yellow color they impart to the flowers of snapdragons and cosmos. Most studies of aurones focus on their range of biological activities, but relatively little has been reported with respect to their opticalproperties, unlike their aza and thio analogs. What little is known has focused entirely
Stereoselective Copper‐Catalyzed Direct Aldol Reaction of β, γ‐Unsaturated α‐Ketoesters with Coumaran‐3‐Ones
作者:Kuiliang Li、Xiang Sun、Linge Li、Zhenggen Zha、Feng‐Lian Zhang、Zhiyong Wang
DOI:10.1002/chem.202003510
日期:2021.1.7
An efficient direct aldol reaction between coumaran‐3‐ones and β, γ‐unsaturated α‐ketoesters by virtue of a chiral copper complex is developed. A series of coumaran‐3‐one derivatives containing chiral tertiary alcohol structures are obtained in excellent yields and stereoselectivities.