4287-20-1Relevant academic research and scientific papers
Lewis Acid-Catalyzed Addition of Benzophenone Imine to Epoxides Enables the Selective Synthesis and Derivatization of Primary 1,2-Amino Alcohols
Leitch, David C.,Lim, John Jin
, p. 641 - 649 (2018/05/14)
Benzophenone imine was found to be an effective ammonia surrogate for the selective preparation of primary 1,2-amino alcohols from epoxides, including enantiopure epichlorohydrin, in the presence of catalytic Y(OTf)3. High-throughput screening of 48 Lewis acids quickly identified Y(OTf)3 as an effective mediator of the addition reaction under mild conditions. Following acidic hydrolysis, the primary amino alcohol salt is revealed and partitions into the aqueous solution, while the benzophenone byproduct is easily removed by simple extraction with ethyl acetate. These ammonium salts can be directly Boc-protected or further derivatized without isolation to form benzamides and sulfonamides under Schotten-Baumann-type conditions in up to 79% isolated yield over three steps. This methodology has been used to prepare key intermediates for the synthesis of PRMT5 inhibitors with high enantiopurity as well as numerous other amide and sulfonamide derivatives.
NOVEL DIPEPTIDYL-PEPTIDASE-IV INHIBITORS
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Paragraph 0073, (2013/07/25)
The invention comprises novel inhibitors of dipeptidyl peptidase IV (DPP-IV) with beta blocker activity, pharmaceutical compositions comprising therapeutically effective amounts of novel inhibitors of DPP-IV, and novel methods of treating medical conditio
COMPOUNDS AND METHOD FOR TREATMENT OR PROPHYLAXIS OF CARDIAC DISOREDRS
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, (2008/06/13)
A short-acting β-blocking compound of the formula STR1 wherein Ar may be substituted or unsubstituted aromatic, Y may be a straight or branched carbon chain or aralkyl, R may be lower alkyl, lower alkenyl, lower alkynyl, aryl or aralkyl, and x is an integer from 1 to about 3; or a pharmaceutically acceptable salt thereof.
Ultra-short-acting β-adrenergic receptor blocking agents. I. (Aryloxy)propanolamines containing esters in the nitrogen substituent
Erhardt,Woo,Gorczynski,Anderson
, p. 1402 - 1407 (2007/10/02)
In an attempt to produce short-acting β-adrenergic receptor blocking agents, we prepared several (aryloxy)propanolamines with ester functions incorporated into the nitrogen substituent. Many of these compounds exhibited a short duration of blocking activity after their continuous intravenous infusion for 40 min. However, their durations were found to increase considerably upon longer intravenous infusion.
