Novel 3-O-carbamoyl erythromycin A derivatives (carbamolides) with activity against resistant staphylococcal and streptococcal isolates
摘要:
A novel series of 3-O-carbamoyl erythromycin A derived analogs, labeled carbamolides, with activity versus resistant bacterial isolates of staphylococci (including macrolide and oxazolidinone resistant strains) and streptococci are reported. An (R)-2-aryl substituent on a pyrrolidine carbamate appeared to be critical for achieving potency against resistant strains. Crystal structures showed a distinct aromatic interaction between the (R)-2-aryl (3-pyridyl for 4d) substituent on the pyrrolidine and G2484 (G2505, Escherichia coli) of the Deinococcus radiodurans 50S ribosome (3.2 angstrom resolution). (C) 2013 Elsevier Ltd. All rights reserved.
Discovery of new piperidine amide triazolobenzodiazepinones as intestinal-selective CCK1 receptor agonists
摘要:
New cholecystokinin-1 receptor (CCK1R) agonist 'triggers' were identified using iterative library synthesis. Structural activity relationship studies led to the discovery of compound 10e, a potent CCK1R agonist that demonstrated robust weight loss in a diet-induced obese rat model with very low systemic exposure. Pharmacokinetic data suggest that efficacy is primarily driven through activation of CCK1R's located within the intestinal wall. (C) 2012 Elsevier Ltd. All rights reserved.
Synthesis of Enantiopure 1-Aryl-1-butylamines and 1-Aryl-3-butenylamines by Diastereoselective Addition of Allylzinc Bromide to Imines Derived from (R)-Phenylglycine Amide
作者:Jan Dalmolen、Marcel van der Sluis、José W. Nieuwenhuijzen、Auke Meetsma、Ben de Lange、Bernard Kaptein、Richard M. Kellogg、Quirinus B. Broxterman
DOI:10.1002/ejoc.200300662
日期:2004.4
The highlydiastereoselective addition of allylzinc bromide to imines derivedfrom (R)-phenylglycine amide is reported. Homoallylamines with high enantiomeric purity are obtained from the adducts in three steps on removal of the chiralauxiliary by means of a nonreductive protocol. Removal of the auxiliary by hydrogenation leads to the saturated amines, also in high enantiomeric purity. [reaction: see
[EN] (S)-CSA SALT OF S-KETAMINE, (R)-CSA SALT OF S-KETAMINE AND PROCESSES FOR THE PREPARATION OF S-KETAMINE<br/>[FR] SEL (S)-CSA DE S-KÉTAMINE, SEL (R)-CSA DE S-KÉTAMINE ET PROCÉDÉS PERMETTANT LA PRÉPARATION DE S-KÉTAMINE
申请人:CHEN CHENG YI
公开号:WO2016180984A1
公开(公告)日:2016-11-17
The present invention is directed to processes for the preparation of esketamine. The present invention is further directed to processes for the resolution of S-ketamine from a racemic or enantiomerically enriched mixture of ketamine. The present invention is further directed to an (S)-CSA salt of S-ketamine, more particularly a monohydrate form of the (S)-CSA salt of S-ketamine; and to an (R)-CSA salt of R-ketamine.
Four-component α-bromo-β-phosphoalkoxylation of aromatic α,β-unsaturated carbonyl compounds
作者:Muhammad Sohail、Yixin Zhang、Wujun Liu、Qin Chen、Lei Wang、Zongbao K. Zhao
DOI:10.1039/c4ra12417k
日期:——
Novel α-bromo-β-phosphoalkoxylated carbonyl compounds were produced in moderate to excellent yields via highly selective four-component reaction involving NBS, a cyclic ether, an organic phosphate and an aromatic α,β-unsaturated carbonyl compound.
[EN] TRICYCLIC 1-[(3-INDOL-3-YL)CARBONYL] PIPERAZINE DERIVATIVES AS CANNABINOID CB1 RECEPTOR AGONISTS<br/>[FR] DERIVES TRICYCLIQUES DE PIPERAZINE 1-[(3-INDOL-3-YL)CARBONYL] UTILES EN TANT QU'AGONISTES DU RECEPTEUR CANNABINOIDE CB1
申请人:AKZO NOBEL NV
公开号:WO2005058327A1
公开(公告)日:2005-06-30
The invention relates to tricyclic 1-[(indol-3-yl)carbonyl]piperazine derivative having the general Formula (I) wherein X is CH2, O or S; R represents 1-3 substituents independently selected from H, (C1-4)alkyl, (C1-4)alkyloxy and halogen; R1 is (C5-8)cycloalkyl; R2 is H or (C1-4)alkyl; R3, R3´, R4’ R4’, R5, R5’ and R6’ are independently hydrogen or (C1-4)-alkyl, optionally substituted with (C1-4)alkyloxy, OH or halogen; R6 is hydrogen or (C1-4)alkyl, optionally substituted with (C1-4)alkyloxy, OH or halogen; or R6 forms together with R7 a 4-7 membered saturated heterocyclic ring, optionally containing a further heteroatom selected from O and S; R7 forms together with R6 a 4-7 membered saturated heterocydic ring, optionally containing a further heteroatom selected from O and S; or R7 is H, (C1-4)alkyl or (C3-5)cycloalkyl, the alkyl groups being optionally substituted with OH, halogen or (C1-4)alkyloxy; or a pharmaceutically acceptable salt thereof. The invention also relates to pharmaceutical compositions comprising said tricyclic 1-[(indol-3-yl)carbonyl]piperazine derivatives, and to the use of these derivatives in the treatment of pain, such as peri-operative pain, chronic pain neuropathic pain, cancer pain, and pain and spasticity associated with multiple sclerosis.
Bromophosphoalkoxylation of olefins with organic phosphates, cyclic ethers and NBS
作者:Muhammad Sohail、Chang Peng、Siyang Ning、Yixin Zhang、Muhammad Khan、Zongbao K. Zhao
DOI:10.1016/j.tet.2015.12.008
日期:2016.2
A variety of structurally novel phosphoalkoxy ester derivatives were prepared via highly regio- and diastereoselective four-component reaction involving olefin, cyclic ether, halogen reagent and organic phosphate. All components can be varied flexibly and moderate to excellent yields were obtained at room temperature. Several of these ester derivatives showed strong anticancer activity against human