140630-43-9Relevant academic research and scientific papers
Stereocontrolled synthesis of 3-substituted azetidinic amino acids
Sivaprakasam, Mangaleswaran,Couty, Fran?ois,Evano, Gwilherm,Srinivas,Sridhar,Rao, K. Rama
, p. 781 - 785 (2007/10/03)
A set of enantiomerically pure N-disubstituted β-amino alcohols was chlorinated by treatment with thionyl chloride. This reaction gave a mixture of regioisomeric chlorides that could be equilibrated to the more stable regioisomer by heating in DMF. The chlorides thus obtained were engaged in an intramolecular anionic ring-closure and gave access to fully protected enantio- and diastereomerically pure 2,3-cis-disubstituted azetidinic amino acids. One of the latter was deprotected and included in a short peptide sequence. Georg Thieme Verlag Stuttgart.
Dynamic kinetic asymmetric synthesis of β-aminoalcohols from racemic epoxides in cyclodextrin complexes under solid state conditions
Reddy,Bhanumathi,Rao
, p. 2321 - 2322 (2007/10/03)
It has been shown for the first time that enantiopure β-aminoalcohols can be prepared from racemic epoxides by dynamic kinetic resolution involving enantio-differentiating racemisation in cyclodextrin complexes under solid state conditions.
Enantioselective ring opening of epoxides with trimethylsilyl azide (TMSN3) in the presence of β-cyclodextrin: An efficient route to 1,2-azido alcohols
Kamal, Ahmed,Arifuddin,Rao, Maddamsetty V.
, p. 4261 - 4264 (2007/10/03)
The ring opening of epoxides with nucleophiles such as TMSN3 and isopropylamine takes place enantioselectively in the presence of β- cyclodextrin under extremely mild conditions and the azido alcohols and amino alcohols are formed as (S)-isomers. (C) 1999 Published by Elsevier Science Ltd.
Relationships between conformational behaviour and binding affinity towards β1 and β2 adrenoceptors of some chiral phenoxypropanolamines with bulky N-substituents
Villa,Villa,Pallavicini,Romeo,Valoti,Ferri,Iuliano,Brunello
, p. 643 - 658 (2007/10/03)
The optical isomers of a series of phenoxypropanolamine compounds with N-substituents bulkier than isopropyl have been synthesized, and their binding affinity towards β1 and β2-adrenoceptors has been determined. A computational study, including a Molecular Dynamics (MD) simulation and quenching in water and a GRID analysis provided some useful suggestions for possible interpretation patterns for the different affinity exhibited by the compounds studied.
Enzyme Catalyzed Stereoselective Synthesis of (S)-Propanolamines
Kamal. Ahmed,Rao, Maddamsetty V.
, p. 1881 - 1882 (2007/10/02)
Stereoselective synthesis of (S)-propanolamines has been carried out by the ring opening of racemic epoxides with 2-propylamine in presence of lipases and subtilisin.The effect of solvent towards selectivity has also been studied.
Enzyme Assisted Preparation of Enantiomerically Pure β-Adrenergic Blockers II. Building Blocks of High Optical Purity and their Synthetic Conversion
Ader, Ulrich,Schneider, Manfred P.
, p. 205 - 208 (2007/10/02)
Based on previous screening results a series of potential building blocks 2-4 for β-adrenergic blockers were prepared both by enzymatic hydrolysis and acyltransfer and further transformed into the corresponding oxiranes and aminoalcohols of defined absolu
