[2 + 2] Annulation of Aldimines with Sulfonic Acids: A Novel One-Pot cis-Selective Route to β-Sultams
作者:Ankita Rai、Vijai K. Rai、Atul K. Singh、Lal Dhar S. Yadav
DOI:10.1002/ejoc.201100628
日期:2011.8
A novel DMF/dimethyl sulfate promoted [2 + 2] annulation of aldimines with sulfonic acids afforded β-sultams in good to excellent yields (35–93 %) under mild conditions. The protocol offers a convenient alternative to highly corrosive and hygroscopic sulfonyl chlorides to provide β-sultams with complete diastereoselectivity in favour of the cis isomers.
Process for the separation of dienic or aromatic hydrocarbons from
申请人:Compagnie Francaise de Raffinage
公开号:US04170547A1
公开(公告)日:1979-10-09
Process for the extraction of diene or aromatic hydrocarbons from petroleum hydrocarbon fractions employing sulfonamides as solvents. Also described are new sulfonamides useful as solvents for the extraction process.
使用磺酰胺作为溶剂从石油烃分离二烯或芳香族烃的提取过程。还描述了新的磺酰胺,可用作提取过程的溶剂。
PGD2 receptor antagonists for the treatment of inflammatory diseases
申请人:Ghosh Shomir
公开号:US20050256158A1
公开(公告)日:2005-11-17
Disclosed herein are compounds represented by Structural Formula (I) and (I-A):
Also disclosed is the use of such compounds for inhibiting the G-protein coupled receptor referred to as chemoattractant receptor-homologous molecule expressed on Th2, or simply “CRTH2” for the treatment of inflammatory disorders. The variables in Structural Formula (I) and (I-A) are defined herein.
Benzothiazoles having histamine H3 receptor activity
申请人:Dorwald Florencio Zaragoza
公开号:US08772285B2
公开(公告)日:2014-07-08
Certain novel benzothiazoles and benzoxazoles, e.g., 2-(piperazin-1-yl)benzothiazoles and 2-(piperazin-1-yl)benzoxazoles, optionally substituted in the 3 and/or 4 positions of the piperazine rings, having histamine H3 antagonistic activity can be used in pharmaceutical compositions.
Benzothiazoles Having Histamine H3 Receptor Activity
申请人:Dorwald Florencio Zaragoza
公开号:US20130079340A1
公开(公告)日:2013-03-28
Certain novel benzothiazoles and benzoxazoles, e.g., 2-(piperazin-1-yl)benzothiazoles and 2-(piperazin-1-yl)benzoxazoles, optionally substituted in the 3 and/or 4 positions of the piperazine rings, having histamine H3 antagonistic activity can be used in pharmaceutical compositions.