The conformationally restricted, spatially defined macrocyclic ring system of formula (I) is constituted by three distinct molecular parts: Template A, conformation Modulator B and Bridge C. Macrocycles described by this ring system I are readily manufactured by parallel synthesis or combinatorial chemistry in solution or on solid phase. They are designed to interact with a variety of specific biological target classes, examples being agonistic or antagonistic activity on G-protein coupled receptors (GPCRs), inhibitory activity on enzymes or antimicrobial activity. In particular, these macrocycles show inhibitory activity on endothelin converting enzyme of subtype 1 (ECE-1) and/or the cysteine protease cathepsin S (CatS), and/or act as antagonists of the oxytocin (OT) receptor, thyrotropin-releasing hormone (TRH) receptor and/or leukotriene B4 (LTB4) receptor, and/or as agonists of the bombesin 3 (BB3) receptor, and/or show antimicrobial activity against at least one bacterial strain. Thus they are showing great potential as medicaments for a variety of diseases.
Photo-Ritter Reaction of Arylmethyl Bromides in Acetonitrile
作者:Nai-Min Bi、Ming-Guang Ren、Qin-Hua Song
DOI:10.1080/00397910903297555
日期:2010.8.5
The photo-Ritter reaction of five arylmethyl bromides can occur in acetonitrile to give acetamides. The intermediates, carbocations, which are formed from subsequent electron transfer between the radical pairs generated from initial homolytic cleavage of the C–Br bond, are trapped by acetonitrile, and subsequent hydrolysis generates the corresponding acetamides.
The present invention relates to triazolylpiperidine compounds useful for the treatment of hypertension and diseases, disorders or conditions due to or involving hypertension and high blood pressure. In particular, the present invention relates to substituted triazolylpiperidine compounds representing inhibitors of aspartic proteases, in particular, of renin. Further, the present invention relates to pharmaceutical compositions containing the same useful in the treatment or prophylaxis of hypertension, preferably of essential hypertension.
Photochemistry of phosphate esters: an efficient method for the generation of electrophiles
作者:Richard S. Givens、Bogdan Matuszewski
DOI:10.1021/ja00334a075
日期:1984.10
The photochemical cleavage of benzyl diethyl phosphates has been examined in tert-butyl alcohol, which produces the corresponding benzyl tert-butyl ether as the major solvolysis product upon direct irradiation. The multiplicity of the reactiveexcitedstate has been established as the singlet state
Dichotomy of Atom-Economical Hydrogen-Free Reductive Amidation vs Exhaustive Reductive Amination
作者:Pavel N. Kolesnikov、Dmitry L. Usanov、Karim M. Muratov、Denis Chusov
DOI:10.1021/acs.orglett.7b02821
日期:2017.10.20
Rh-catalyzed one-step reductive amidation of aldehydes has been developed. The protocol does not require an external hydrogen source and employs carbon monoxide as a deoxygenative agent. The direction of the reaction can be altered simply by changing the solvent: reaction in THF leads to amides, whereas methanol favors formation of tertiaryamines.