Facile one-step synthesis of 2,5-diketopiperazines
作者:Xianyu Sun、Rachita Rai、Alexander D. MacKerell、Alan I. Faden、Fengtian Xue
DOI:10.1016/j.tetlet.2014.01.133
日期:2014.3
We report a one-step protocol for the general synthesis of 2,5-diketopiperazines from an Fmoc-protected amino acid and an amino acid ester. The application of the method is highlighted by rapid and efficient preparation of various 2,5-diketopiperazines.
Combination of FBPase inhibitors and insulin sensitizers for the treatment of diabetes
申请人:Metabasis Therapeutics, Inc.
公开号:US06756360B1
公开(公告)日:2004-06-29
Pharmaceutical compositions containing an FBPase inhibitor and an insulin sensitizer are provided as well as methods for treating diabetes and diseases responding to increased glycemic control, an improvement in insulin sensitivity, a reduction in insulin levels, or an enhancement of insulin secretion.
[EN] PHOSPHONIC ACID DERIVATES AND THEIR USE AS P2Y12 RECEPTOR ANTAGONISTS<br/>[FR] DÉRIVÉS D'ACIDE PHOSPHONIQUE ET LEUR UTILISATION EN TANT QU'ANTAGONISTES DU RÉCEPTEUR P2Y12
申请人:ACTELION PHARMACEUTICALS LTD
公开号:WO2009069100A1
公开(公告)日:2009-06-04
The invention relates to 2-phenyl-pyrimidine derivatives containing a phosphonic acid motif and their use as P2Y12 receptor antagonists in the treatment and/or prevention of peripheral vascular, of visceral-, hepatic- and renal-vascular, of cardiovascular and of cerebrovascular diseases or conditions associated with platelet aggregation, including thrombosis in humans and other mammals. (I).
New reagent for the introduction of Boc protecting group to amines: Boc-OASUD
作者:B. Leela Maheswara Rao、Shaik Nowshuddin、Anjali Jha、Murali K. Divi、M. N. A. Rao
DOI:10.1080/00397911.2017.1366525
日期:2017.11.17
ABSTRACT A new reagent, tert-butyl (2,4-dioxo-3-azaspiro [5,5] undecan-3-yl) carbonate (Boc-OASUD) for the preparation of N-Boc-amino acids is described. The Boc-OASUD reacts with amino acids and their esters at room temperature in the presence of a base and gives N-Boc-amino acids and their esters in good yields and purity. Introduction of the Boc group takes place without racemization. The Boc-OASUD