27796-49-2Relevant articles and documents
Titanium-catalyzed stereoselective synthesis of spirooxindole oxazolines
Badillo, Joseph J.,Arevalo, Gary E.,Fettinger, James C.,Franz, Annaliese K.
supporting information; experimental part, p. 418 - 421 (2011/04/15)
A regio-and stereoselective cyclization between isatins and 5-methoxyoxazoles has been developed using catalytic titanium (IV) chloride (10 or 20 mol %) to afford spiro[3,3'-oxindoleoxazolines] in excellent yield (up to 99%) and diastereoselectivity (dr >
Substrate Specificity and Stoichiometry of Nα-Benzyloxycarbonyl Amino Acid Urethane Hydrolase from Streptococcus faecalis R ATCC 8043
Matsumura, Eiko,Shin, Takashi,Murao, Sawao,Kawano, Tatsu
, p. 973 - 980 (2007/10/02)
The substrate specificity of a new enzyme, Nα-benzyloxycarbonyl amino acid urethane hydrolase, was investigated.The enzyme hydrolyzed Nα-benzyloxycarbonyl-glycine and -alanine, and Nα-benzoyl-glycine and -alanine.Nα-benzyloxycarbonyl-glycine was hydrolyzed to give equimolar benzyl alcohol and glycine.Equimolar benzoic acid and glycine were produced from Nα-benzoyl-glycine by the enzyme reaction.The Km, k0, and k0/Km values were measured for several substrates.The k0 values varied widely with the amino acid residues.Nα-benzyloxycarbonyl-glycine and Nα-benzoyl-glycine produced relatively small changes in the Km values (0.36 ca. 0.10 mM) and the k0/Km values (99440 ca. 202000 M-1 sec-1).The rate of hydrolysis is significantly affected by electron-supplying substituents on the benzene ring.