On the Synthesis of Stereocalpin A: Partial Retraction/Correction of Previous Results and Rationalization of the Hidden Difficulties
作者:Zhiwei Zhao、Yikang Wu、Yan Li
DOI:10.1002/cjoc.201600884
日期:2017.7
In continuation/checking of a previous synthesis directed toward the literature structure of stereocalpin A it was found that the data for a substantial part of the intermediates reported before were incorrect. Some of the transformations were not successfully reproduced and the failures were shown to be consequences of the presence of the N‐Me and the particular location of the ester linkage. The
N-alkylation of unprotected aminoacids. The catalytic system gives excellent selectivity toward monoalkylated α-amino acids and a high degree of retention of stereochemistry. A wide range of unprotected nonnatural aminoacids have been prepared. These compounds represent an array of building blocks that could be used for the direct synthesis of peptidomimetics. The synthesis of amino-acid-based surfactants
Peptides, process for preparing the same and psychodepressant compositions containing the same
申请人:AMANO PHARMACEUTICAL CO., LTD.
公开号:EP0107860A1
公开(公告)日:1984-05-09
This invention provides a peptide represented by the formula R-Tyr(SO3H)-Met-Gly-Trp-Met-Asp-W-NH2 wherein R is HOOC-A-CO-Asp- (wherein A is lower alkylene), pGlu-Asp-, HOOC-A-CO (wherein A is lower alkylene) or
and W is Phe or N"-lower alkyl-Phe, or a salt thereof, process for preparing the peptide and psychodepressant composition containing the peptide.
The peptides of the invention are useful as psychodepressant drug, and especially effective for curing schizophrenia.
本发明提供了由式 R-Tyr(SO3H)-Met-Gly-Trp-Met-Asp-W-NH2代表的多肽,其中 R 是 HOOC-A-CO-Asp-(其中 A 是低级亚烷基)、pGlu-Asp-、HOOC-A-CO(其中 A 是低级亚烷基)或
和 W 是 Phe 或 N"-低级烷基-Phe,或其盐,制备该肽的工艺和含有该肽的精神抑郁症组合物。
本发明的多肽可用作精神抑郁症药物,尤其对治疗精神分裂症有效。
Quinoline and pyridoquinoxaline derivatives as antibacterial agents
申请人:University of Jordan
公开号:EP1721898B1
公开(公告)日:2011-03-16
Kulikov, S. V.; Kepin, O. V.; Samartsev, M. A., Russian Journal of General Chemistry, 1994, vol. 64, # 2, p. 312 - 313