[EN] 3-SUBSTITUTED-4-0X0-3, 4-DIHYDRO-IMIDAZO- [5, 1-D] [1,2,3,5] -TETRAZINE-8-CARBOXYLIC ACID AMIDES AS ANTICANCER AGENTS [FR] AMIDES D'ACIDES 4-OXO-3,4-DIHYDROIMIDAZO[5,1-D][1,2,3,5-TÉTRAZINE-8-CARBOXYLIQUES SUBSTITUÉS EN POSITION 3 ET LEUR UTILISATION
Preparation of 1-aminoalkylphosphonic acids and 2-aminoalkylphosphonic acids by reductive amination of oxoalkylphosphonates
作者:Artur Ryglowski、Pawel Kafarski
DOI:10.1016/0040-4020(96)00590-x
日期:1996.8
By reacting dialkyl 1-oxo- or 2-oxoalkylphosphonates with benzhydrylamine followed by reduction with triacetoxyborohydride and acid hydrolysis gave corresponding aminoalkylphosphonic acids with satisfactory yields. The use of benzylamine, α-methylbenzylamine and tritylamine was unsuccessful in the case of dialkyl 1-oxoalkylphosphonates whereas conversion of 2-oxoalkylphosphonates was also achieved
biological evaluation of a series of 7-[2-(2-aminothiazol-4-yl)-2-(Z)-[(cyclopentyloxy)imino]acetamido] opticallyactive 2-oxaisocephems, substituted at the 3-position with [(N-alkylpyridinium-4'-yl)thio]methyl groups, are described. The resulting family of parenteral compounds displays a broad spectrum of in vitro antibacterialactivity. These compounds exhibit increased activity against Gram-positive organisms
Titanium(IV) tetraiodide induces a Reformatsky-type reaction of α-iodoketones with carbonyl compounds to give β-hydroxy ketones in good to high yields.
A novel facile method for the traceless solid-phase synthesis of α-iodo ketones using a recyclable resin-bound selenium bromide reagent is reported. Various ketones and β-dicarbonylcompounds can be converted to the corresponding α-iodo-substituted compounds in excellent yields and purities with simple workup procedure and mild conditions.
Peptide derivatives having thiazolyl-alanine residue
申请人:Shionogi & Co., Ltd.
公开号:US06319902B1
公开(公告)日:2001-11-20
A peptide derivation of the formula (I) or its pharmaceutically acceptable salt or hydrate thereof is disclosed.
These compounds have superior ability over thyroid stimulating hormone (TRH) and its derivatives to activate the central nervous system, such as, for example, sustained acetylcholine releasing action, anti-reserpine action and locomotor increment.