Expedient Microwave-Assisted Synthesis of Novel 6-Substituted 5-Alkoxy(benzyloxy)-3,6-dihydro-2H-1,3,4-oxadiazin-2-ones
摘要:
Novel 6-substituted 5-alkoxy(benzyloxy)-3,6-dihydro-2H-1,3,4-oxadiazin-2-ones have been prepared in good yields and very short reaction times by intramolecular cyclization of alpha-hydroxyhydrazonates in the presence of sodium ethoxide under microwave irradiation.
6-[.alpha.-(Amidino- and imidoylaminoalkanoylamino)aracylamino]-penicillanic acids and synthetic methods for the preparation thereof.
6-α-(酰胺基和亚胺基氨基烷酰氨基)阿拉伯氨基-青霉素酸及其制备的合成方法。
Improved glucose tolerance in rats treated with oxazolidinediones
作者:Rodney C. Schnur、Malcolm Morville
DOI:10.1021/jm00155a030
日期:1986.5
5-(2-Chloro-6-methoxyphenyl)oxazolidine-2,4-dione (49) is the most potent agent selected from a series of 5-substituted oxazolidinediones that were found to cause improvements in glucose tolerance in previously fasted rats and potentiation of insulin release in response to a glucose challenge. These compounds were unique in not producing hypoglycemia below the normal fasting glycemia levels. Substituent
Amino-imidazolones for the inhibition of beta-secretase
申请人:Malamas Sotirios Michael
公开号:US20060160828A1
公开(公告)日:2006-07-20
The present invention provides an amino-imidazolone compound of formula I
Also provided are compositions and methods for the use thereof to inhibit β-secretase (BACE) and treat β-amyloid deposits and neurofibrillary tangles.
Different metabolites (2-7) of oxapadol 1 were carried out from 3 by known methods. Their acidic hydrolysis provided compounds 4 in which the dioxolane moiety was opened. The reaction of glycerol with compounds 3 gave the dioxolane derivatives 5 which have a hydroxymethyl group and which (R = H) gave by oxidation the carboxylic acid 7. From 3 (R = H), the hydroxy acid 6 has been also prepared.
Hypoglycemic 5-phenyl and 5-naphthyl oxazolidine-2,4-diones and the pharmaceutically-acceptable salts thereof; certain 3-acylated derivatives thereof; a method of treating hyperglycemic animals therewith; and intermediates useful in the preparation of said compounds.