Highly efficient production of 2-ketobutyrate from 2-hydroxybutyrate by resting cells of Pseudomonas stutzeri DEH130
摘要:
Resting cells of Pseudomonas stutzeri DEH130 were found to act as biocatalysts to convert 2-hydroxybutyrate (2-HB) into 2-ketobutyrate (2-KA). Two different catalysis mechanisms of 2-KA formation were present in the cells, which were induced by glycolate (GA), and DL-lactate (DL-LA), respectively. The productivity number of 6.52mmol g(-1) cells h(-1) was obtained when DL-LA was the sole carbon source and was the highest ever reported.
Synthesis of 4,5-dihydro-pyrazolo [3,4-c] pyrid-2-ones
申请人:Zhou Jiacheng
公开号:US20050245566A1
公开(公告)日:2005-11-03
A novel process and intermediates thereof for making 4,5-dihydro-pyrazolo[3,4-c]pyrid-2-ones of the type shown below from appropriate phenyl hydrazines is described.
These compounds are useful as factor Xa inhibitors.
The present invention provides a novel series of 2,3,4,5-substituted furo[2,3-c]pyrazole compounds. These compounds are found potent in inhibiting thrombocyte aggregation and antiallergy effect.
The invention relates to new competitive inhibitors of trypsin-like serine proteases, their synthesis, pharmaceutical compositions containing the compounds as active ingredients, and the use of the compounds as thrombin inhibitors, anticoagulants and antiinflammatory inhibitors for prophylaxis and treatment of related diseases, according to the formula
wherein A
1
represents a structural fragment of formulas
A
2
represent a structural fragment of formulas
B represents a structural fragment of formulas
Further described is novel compounds, the new use of compounds and especially new structural fragment in synthesis of pharmaceutical compounds.
The invention relates to compounds of the formula A.sup.1 --A.sup.2 --NH--(CH.sub.2).sub.n --B Formula I and A.sup.1 --A.sup.2 --NH--(CH.sub.2).sub.n --B--D Formula V as well as stereoisomers and physiologically acceptable salts thereof which act as competitive inhibitors of trypsin-like serine proteases, particularly kininogenases. The invention further relates to pharmaceutical compositions containing the compounds as active ingredients and the use of the compounds as kininogenase inhibitors and in the treatment of diseases related to kinin formation.
Synthesis of 4,5-dihydro-pyrazolo[3,4-c]pyrid-2-ones
申请人:Bristol-Myers Squibb Company
公开号:US07153960B2
公开(公告)日:2006-12-26
A novel process and intermediates thereof for making 4,5-dihydro-pyrazolo[3,4-c]pyrid-2-ones of the type shown below from appropriate phenyl hydrazines is described.
These compounds are useful as factor Xa inhibitors.