5-Quinoline derivatives having an anti-bacterial activity
申请人:Dale Glenn
公开号:US20100324030A1
公开(公告)日:2010-12-23
The present invention describes novel anti-bacterial compounds of the formula (I).
These compounds are, amongst others, of interest as inhibitors of DNA gyrase and topoisomerases, for example of topoisomerase II and IV.
Pd-catalyzed intramolecular Heck reaction for the synthesis of 2-methylbenzofurans
作者:Lixin Zhou、Yuxing Shi、Xueyan Zhu、Peng Zhang
DOI:10.1016/j.tetlet.2019.06.054
日期:2019.7
A new strategy for the synthesis of 2-Methylbenzofurans via the intramolecular Heckreaction has been developed. This efficient palladium-catalyzed system showed good catalytic activity. Various substituted 2-methylbenzofurans could be afforded in good to excellent yields.
A novel series of 4'-dehydroxyphlorizin derivatives was synthesized and the effects of these compounds on urinary glucose excretion were evaluated in rats. There was a strict structural requirement for activity. Introduction of a small substituent or a flat ring at the 3- and/or the 4-position on the A ring was permissible, but any change at the bridge part between the A and B rings or in the sugar moiety resulted in complete loss of activity. The 6'-OH group on the B ring was also necessary, and even small structural modifications of the 6'-OH group reduced the activity considerably. Among the compounds synthesizez, the 5-benzofuryl derivative 25 was the most potent and was selected as a new lead for further structure-activity relationship investigations.
Claisen rearrangement of aryl propargyl ethers in poly(ethylene glycol)- a remarkable substituent and solvent effect
作者:Usha Roa、K.K. Balasubramanian
DOI:10.1016/s0040-4039(01)99839-9
日期:1983.1
The Claisen rearrangement of aryl propargyl ethers in poly(ethylene glycol) - 200 at 200°C affords products in good yields. Aryl propargyl ethers containing electron donating groups yield (2H)-benzopyrans and those containing electron withdrawing groups yield 2-methylbenzofurans.
[EN] SUBSTITUTED DIKETOPIPERAZINES FOR THE TREATMENT OF BENIGN PROSTATIC HYPERPLASIA<br/>[FR] DICETOPIPERAZINES POUR LE TRAITEMENT DE L'HYPERPLASIE BENIGNE DE LA PROSTATE
申请人:GLAXO GROUP LTD
公开号:WO2005000311A1
公开(公告)日:2005-01-06
A method of treating or preventing benign prostatic hyperplasia which comprises administering to a mammal in need thereof of an effective amount of a compound of Formula (I) where R1, R2, R3 and R4 are defined as provided in claim 1.