Tryptoline-based benzothiazoles re-sensitize MRSA to β-lactam antibiotics
摘要:
Resistance-modifying agents (RMAs) offer a promising solution to combat bacterial antibiotic resistance. Here we report the discovery and structure-activity relationships of a new class of RMAs with a novel tryptoline-based benzothiazole scaffold. Our most potent compound in this series (4ad) re-sensitizes multiple MRSA strains to cephalosporins at low concentrations (2 mu g/mL) and has low mammalian cytotoxicity with a half growth inhibitory concentration (GI(50)) > 100 mu g/mL in human cervical carcinoma (HeLa) cells. In addition, the same core scaffold with different substitutions also gives good antibacterial activity against MRSA.
There is provided a compound of the formula (I′):
wherein x is a nitrogen or CRx, Rx is a hydrogen, etc., R
1
is an optionally substituted hydrocarbon group, etc., R
2
is an optionally substituted hydrocarbon group, etc., ring A is 5- to 8-membered heterocyclic ring, etc., and each of Y
1
, Y
2
and Y
3
is an optionally substituted carbon or a nitrogen, etc.; or a salt thereof or a prodrug thereof, which have CRF receptor antagonistic activity and use thereof.
Langlois reagent was found to be effective for the isothiocyanation of primary amines in the presence of copper iodide and diethyl phosphonate.
发现在碘化铜和膦酸二乙酯存在下,Langlois试剂对于伯胺的异硫氰酸酯化有效。
Tricyclic compounds and use thereof
申请人:Aso Kazuyoshi
公开号:US08785460B2
公开(公告)日:2014-07-22
There is provided a compound of the formula (I′):
wherein x is a nitrogen or CRx, Rx is a hydrogen, etc., R1 is an optionally substituted hydrocarbon group, etc., R2 is an optionally substituted hydrocarbon group, etc., ring A is 5- to 8-membered heterocyclic ring, etc., and each of Y1, Y2 and Y3 is an optionally substituted carbon or a nitrogen, etc.; or a salt thereof or a prodrug thereof, which have CRF receptor antagonistic activity and use thereof.
Tricyclic compounds having corticotropin-releasing factor antagonistic activity and pharmaceutical compositions containing them
申请人:Aso Kazuyoshi
公开号:US08901141B2
公开(公告)日:2014-12-02
There is provided a compound of the formula (I′): wherein X is a nitrogen or CRx, Rx is a hydrogen, etc., R1 is an optionally substituted hydrocarbon group, etc., R2 is an optionally substituted hydrocarbon group, etc., ring A is 5- to -8-membered heterocyclic ring, etc., and each of Y1, Y2 and Y3 is an optionally substituted carbon or a nitrogen, etc.; or ‘a salt thereof or a prodrug thereof, which have CRF receptor antagonistic activity and use thereof.
TRICYCLIC COMPOUNDS HAVING CORTICOTROPIN-RELEASING FACTOR ANTAGONISTIC ACTIVITY AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM
申请人:Aso Kazuyoshi
公开号:US20100298287A1
公开(公告)日:2010-11-25
There is provided a compound of the formula (I′): wherein X is a nitrogen or CRx, Rx is a hydrogen, etc., R
1
is an optionally substituted hydrocarbon group, etc., R
2
is an optionally substituted hydrocarbon group, etc., ring A is 5- to -8-membered heterocyclic ring, etc., and each of Y
1
, Y
2
and Y
3
is an optionally substituted carbon or a nitrogen, etc.; or ‘a salt thereof or a prodrug thereof, which have CRF receptor antagonistic activity and use thereof.