Identification of 6-substituted 4-arylsulfonyl-1,4-diazepane-2,5-diones as a novel scaffold for human chymase inhibitors
摘要:
A novel series of 6-substituted 4-sulfonyl-1,4-diazepane-2,5-diones were designed, synthesized and evaluated as human chymase inhibitors. Structure-activity relationship studies led to the identification of a potent inhibitor, (6S)-6-(5-chloro-2-methoxybenzyl)-4-[(4-chlorophenyl)sulfonyl]-1,4-diazepane-2,5-dione, with an IC50 of 0.027 mu M. (c) 2007 Elsevier Ltd. All rights reserved.
Palladium-Catalyzed Asymmetric Construction of Vicinal Tertiary and All-Carbon Quaternary Stereocenters by Allylation of β-Ketocarbonyls with Morita-Baylis-Hillman Adducts
β‐ketocarbonyls with Morita–Baylis–Hillman adducts has been developed using a spiroketal‐based diphosphine (SKP) as the ligand, thus affording a range of densely functionalized products bearing vicinal tertiary and all‐carbon quaternary stereodyad in high selectivities. The utility of the protocol was demonstrated by the facilesynthesis of some complex molecules by simple product transformations.
and enantioselectivity in the palladium‐catalyzed asymmetric allylic amination of racemic Morita–Baylis–Hillman adducts with aromatic amines. The methodology provides a facile and efficient synthesis of precursors for opticallyactiveβ‐lactam derivatives, including the cholesterol drug Ezetimibe.
INDOLIZINONE BASED DERIVATIVES AS POTENTIAL PHOSPHODIESTERASE 3 (PDE3) INHIBITORS AND A PROCESS FOR THE PREPARATION THEREOF
申请人:COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
公开号:US20140296530A1
公开(公告)日:2014-10-02
The present invention provides compounds of general formula A useful as potential phosphodiesterase3 (PDE3) inhibitory agents and a process for the preparation thereof. The derivatives of formula A can be employed as therapeutics in human and veterinary medicine, where they can be used, for example, for the treatment and prophylaxis of the following diseases: heart failure, dilated cardiomyopathy, platelet inhibitors, cancer and obstructive pulmonary diseases.
A palladium‐catalyzed asymmetric allyl–allyl cross‐coupling of acetates of racemic Morita–Baylis–Hillman adducts and allylB(pin) has been developed using a spiroketal‐based bis(phosphine) as the chiral ligand, thus affording a series of chiral 1,5‐dienes bearing a vinylic ester functionality in good yields, high branched regioselectivities, and uniformly excellent enantioselectivities (95–99 % ee)
A silver/palladium relay catalyzed 1,3-dipole annulation/allylation reaction of iminoesters and Baylis-Hillman acetates for the construction of fully substituted allyl imidazolidines is reported. The reaction of both iminoesters and Baylis-Hillman acetates affords the fully substituted allyl imidazolidines in high yields and regioselectivities. The three component reaction is triggered by silver-catalyzed