Modulating hydrogen-bond basicity within the context of protein-ligand binding: A case study with thrombin inhibitors that reveals a dominating role for desolvation
作者:Nader N. Nasief、Ahmed M. Said、David Hangauer
DOI:10.1016/j.ejmech.2016.09.038
日期:2017.1
of hydrogen bonding is a challenging but crucial task to improve our ability to design ligands with high affinity for protein hosts. To gain a deeper understanding of these aspects, we investigated a series of thrombin inhibitors in which the basicity of the ligand'sgroup that accepts an H-bond from Gly216 was modulated via bioisosterism; e.g., a C=O acceptor was made electrondeficient or rich via
a variety of novel peptide derivatives for chemical biology studies and potential pharmaceutical applications. The catalytic system tolerates a variety of functional groups including secondary amides, ester, nitrile, thiomethyl, and hydroxy groups. This convenient hydrosilylation reaction proceeds at ambient conditions and is operationally safe because no air‐sensitive reagents or highly reactive metal
This application discloses a composition comprising a malodor compound and an anti-odor ingredient effective for reducing the presence or production of malodor. The composition may be topically applied to a subject and is useful for cosmetic conditions, pharmaceutical indications, or other objectives.
A One-Pot, fast, and efficient amidation of carboxylic acids, α-amino acids and sulfonic acids using pph<sub>3</sub>/<i>n</i>-chlorobenzotriazole system
作者:Hamed Rouhi-Saadabad、Batool Akhlaghinia
DOI:10.1080/10426507.2015.1024313
日期:2015.10.3
Triphenylphosphine (PPh3)/N-chlorobenzotriazole (NCBT), and amine (primary and secondary aliphatic amines and also substituted anilines) in CH2Cl2 efficiently converted carboxylic acids, -amino acids, and sulfonic acids to the corresponding amides and sulfonamides at room temperature. Good to excellent yields, inexpensive, and fast reaction conditions are the important features of this procedure.
CHALLIS, BRIAN C.;MILLIGAN, JAMIE R.;MITCHELL, ROBERT C., J. CHEM. SOC. PERKIN TRANS. PT 1,(1990) N1, C. 3103-3108
作者:CHALLIS, BRIAN C.、MILLIGAN, JAMIE R.、MITCHELL, ROBERT C.