Remarkable effects of lone pair-lone pair interactions on the extremely stereoselective [2 + 2] cycloaddition of azidoketene to chiral 3-imino-.beta.-lactams
[EN] HETEROARYL COMPOUNDS AND THEIR USE AS THERAPEUTIC DRUGS<br/>[FR] COMPOSÉS HÉTÉROARYLE ET LEUR UTILISATION COMME MÉDICAMENTS THÉRAPEUTIQUES
申请人:DONG-A SOCIO HOLDINGS CO LTD
公开号:WO2017039331A1
公开(公告)日:2017-03-09
The present invention provides heterocyclic compounds, the stereoisomer thereof, the enantiomer thereof, or the pharmaceutically acceptable salt, which are capable of modulating the activity of Mer receptor tyrosine kinase (MERTK). This invention also provides pharmaceutical compositions thereof, methods to prepare the said compounds, and the use of such compounds as a medicament. The present invention is directed to MERTK inhibitory compounds with marked potency, thereby having an outstanding potential for a pharmaceutical intervention of cancer and any other diseases related to MERTK dysregulation.
Synthesis, Preferred Conformation, and Membrane Activity of Medium-Length Peptaibiotics: Tylopeptin B
作者:Marina Gobbo、Claudia Poloni、Marta De Zotti、Cristina Peggion、Barbara Biondi、Gema Ballano、Fernando Formaggio、Claudio Toniolo
DOI:10.1111/j.1747-0285.2009.00920.x
日期:2010.2
The solid‐phase synthesis and full chemical characterization of the medium‐length (14‐amino acid residues) peptaibol with antibiotic properties of tylopeptin B, originally extracted from the fruiting body of the mushroom Tylopilus neofelleus, are described. These data are accompanied by the results on the solution‐phase synthesis via the segment condensation approach of a selected, side‐chain protected
on the asymmetric induction as well as catalyst efficiency. The chiral centers in AA' and AA' amino acid residues in 5 were also found to have some influence on the catalytic asymmetric induction. Possible mechanism which can accommodate these effects are discussed. Asymmetricreduction of RCOCO-AA-OMe (13) via hydrosilylation was carried out to give chiral depsipeptide units. The asymmetric hydrogenation
The present invention provides a compound of formula (I), (II), (III) and (IV) as defined herein and pharmaceutically acceptable derivatives thereof. The present invention further provides use of the compounds of the present invention in the treatment of bacterial infection and in the treatment of HIV infection. Also provided are pharmaceutical compositions comprising the compounds of the present invention.
Gonadotropin-releasing hormone receptor antagonists and methods relating thereto
申请人:Zhu Yun-Fei
公开号:US20070208049A1
公开(公告)日:2007-09-06
GnRH receptor antagonists are disclosed that have utility in the treatment of a variety of sex-hormone related conditions in both men and women. The compounds of this invention have the structure:
wherein A, Q, R
1
, R
2
, R
3a
, R
3b
, R
4
, R
5
, R
6
and n are as defined herein, including stereoisomers, prodrugs and pharmaceutically acceptable salts thereof. Also disclosed are compositions containing a compound of this invention in combination with a pharmaceutically acceptable carrier, as well as methods relating to the use thereof for antagonizing gonadotropin-releasing hormone in a subject in need thereof.