Synthesis and biological evaluation of new epalrestat analogues as aldose reductase inhibitors (ARIs)
摘要:
Baylis-Hillman chemistry derived four series of new epalrestat analogues were synthesized. Three structural changes are introduced in these 39 new epalrestat analogues synthesized. All compounds were evaluated for their in vitro aldose reductase inhibitory (ALR) activity. Biological activity data indicates that compounds 6, 16, 19, 28 and 29 are potent and the activity is in the range of reference drug, epalrestat. Molecular modelling studies were performed to understand the binding interactions of these active molecules with the ALR protein. Molecular docking data indicates the key interactions of epalrestat were retained in some of the active compounds whereas some new interactions were noticed for other molecules. The modifications introduced on epalrestat have impact for developing a new-type of ALR inhibitor. (C) 2013 Elsevier Masson SAS. All rights reserved.
Regioand stereoselective synthesis of N -substituted azole acrylonitriles has been achieved smoothly in N,N -dimethylformamide (DMF) in the presence of potassiumcarbonate (K2 CO3) as a base catalyst. N -Substituted azole acrylonitriles were obtained in moderate to good yields (39%–87%) with a one-pot reaction between readily available N -acetylazoles and Baylis-Hillman nitriles. The structural determinations
在碳酸钾(K2CO3)作为碱催化剂存在下,在N,N-二甲基甲酰胺(DMF)中顺利实现了N-取代的唑丙烯腈的区域和立体选择性合成。在容易获得的N-乙酰基唑与Baylis-Hillman腈之间进行一锅法反应后,以中等至良好的收率(39%–87%)获得了N-取代的唑丙烯腈。结构测定通过NOESY 1 H NMR和X射线晶体学完成。
An efficient catalyst-free one-pot synthesis of primary amides from the aldehydes of the Baylis–Hillman reaction
Herein, a facile and efficient method for the preparation of allyl amides from the aldehyde of Baylis–Hillman adducts has been developed using a hydroxylamine/methanol system under a catalyst-free condition. The effects of solvents and temperature on the reaction and substituents on the phenyl ring have been examined. This method is best demonstrated by its advantages such as operational simplicity
A series of pyran derivatives (5–27) were synthesized in good yields by utilizing Baylis–Hillman chemistry and were further investigated for their in vitro anticancer, antibacterial, and antifungal activities. Most of the tested compounds exhibited promising antibacterial activity as compared to the standard towards Gram-positive bacterial strains. The compounds 5–7, 11–13, and 17–19 displayed two-fold
The First One-Pot Synthesis of Morita-Baylis-Hillman Adducts Starting Directly from Alcohols
作者:Lal Yadav、Vishnu Srivastava、Rajesh Patel
DOI:10.1055/s-0029-1219577
日期:2010.4
The first example of one-pot oxidative carbon-carbon bond formation via the Morita-Baylis-Hillman reaction using alcohols is reported. The protocol involves silica gel-DABCO catalyzed oxidation of alcohols to aldehydes with chloramine-T followed by their Morita-Baylis-Hillman reaction with acrylonitrile or methyl acrylate to give 70-87% overall yields of the corresponding Morita-Baylis-Hillman adducts
method for the preparation of allyl chlorides from Baylis–Hillmanadducts has been developed using triphosgene/pyridine system. This method is best illustrated by its advantages like operational simplicity, excellent yields, short reaction time, simple procedure and stereoselectivity. The preparation of allyl chlorides from Baylis-Hillmanadducts has been described using triphosgene & pyridine system