The invention provides new macrolides antibiotics of formula (I) with improved biological properties and improved stability formula (I): wherein R
1
is hydrogen, cyano, —S(L)
m
R
2
, —S(O)(L)
m
R
2
, or —S(O)
2
(L)
m
R
2
; L represents —(CH
2
)
n
— or —(CH
2
)
n
Z(CH
2
)
n′
—-; m is 0 or 1; n is 1, 2, 3, or 4; n′ is 0, 1, 2, 3, or 4; Z is O, S or NH; R2 is hydrogen, alkyl, heterocyclyl or aryl; which heterocyclyl and the aryl groups may be further substituted; * indicates a chiral center which is in the (R) or (S) form and pharmaceutically acceptable acid addition salts or in vivo cleavable esters thereof.
1
Synthesis of N-heterocyclic ligands for use in affinity and mixed mode chromatography
作者:Simon J. Mountford、Eva M. Campi、Andrea J. Robinson、Milton T.W. Hearn
DOI:10.1016/j.tet.2010.11.003
日期:2011.1
designed to consist of a pyridinyl or related aza-heterocyclic nucleus bearing a pendant arm containing either an alkylamine, alkylthiol or hydroxyalkyl nucleophilic group to allow their facile immobilisation onto an activated support matrix. Ligand diversity was achieved by altering the length of the alkyl chain between the heterocyclic nucleus and nucleophilic group, varying the position of alkyl chain
Penem derivatives and antimicrobial agents containing the same
申请人:SUNTORY LIMITED
公开号:EP0774465A1
公开(公告)日:1997-05-21
Penem derivatives represented by the following Formula (I):
wherein Z represents a hydroxyl group or a fluorine atom, R1 represents a substituted or unsubstituted alkyl, alkenyl, aralkyl group, aryl group, heterocyclic, or acyl group, or a hydrogen atom, and R2 represents a hydrogen atom or a carboxyl-protecting group; and pharmacologically acceptable salts thereof are antibacterial agents effective against, inter alia, methicillin-resistant Staphylococcus aureus. The derivatives and salts are novel except when R1 is ethyl and Z is hydroxyl. The analogous compounds in which R2 is a carboxyl-protecting group and any hydroxyl group represented by Z is protected are novel process intermediates.
Penem derivatives and antimicrobial agent containing the same
申请人:Ishiguro Masaji
公开号:US20050004092A1
公开(公告)日:2005-01-06
A penem derivative represented by the following formula (I):
wherein R
1
represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkylthio group, a substituted or unsubstituted alkenylthio group, a substituted or unsubstituted aralkylthio group, a substituted or unsubstituted arylthio group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted heterocyclic thio group, a substituted or unsubstituted acylthio group, a mercapto group or a hydrogen atom, and R
2
represents a hydrogen atom or a carboxyl-protecting group; or a pharmacologically acceptable salt thereof.
The compound (I) exhibits strong antibacterial activities, and especially, shows strong activities against MRSA. It is therefore useful not only as a general antibacterial agent but also as an antibacterial agent for MRSA against which no general antibacterial agents are recognized to be-effective.
G-Protein Coupled Receptor (Gpr116) Agonists and Use Thereof for Treating Obesity and Diabetes
申请人:Fyfe Matthew Colin Thor
公开号:US20080312281A1
公开(公告)日:2008-12-18
Compounds of formula (I), or pharmaceutically acceptable salts thereof, are agonists of GPR116 and are useful for the treatment of obesity, and for the treatment of diabetes.