Terminally modified tri-, tetra- and pentapeptide anaphylatoxin receptor
申请人:Abbott Laboratories
公开号:US05190922A1
公开(公告)日:1993-03-02
Oligopeptide compounds or oligopeptide analogue compounds of the formula A-B-D-E-G-J-L are ligands for the anaphylatoxin receptor and are useful in the treatment of inflammatory disease states. Also disclosed are anaphylatoxin receptor ligand compositions and a method for modulating anaphylatoxin activity.
Synergistic Relay Reactions To Achieve Redox‐Neutral α‐Alkylations of Olefinic Alcohols with Ruthenium(II) Catalysis
作者:Chen‐Chen Li、Jian Kan、Zihang Qiu、Jianbin Li、Leiyang Lv、Chao‐Jun Li
DOI:10.1002/anie.201915218
日期:2020.3.9
the first Grignard-type nucleophilic addition using olefinicalcohols as latent carbonyl groups, providing a higher yield of the corresponding secondary alcohol than the classical hydrazone addition to aldehydes does. A broad scope of unsaturated alcohols and hydrazones, including some complex structures, can be successfully employed in this reaction, which shows the versatility of this approach and
Base-controlled highly selective synthesis of alkyl 1,2-bis(boronates) or 1,1,2-tris(boronates) from terminal alkynes
作者:Guoliang Gao、Jianxiang Yan、Kai Yang、Fener Chen、Qiuling Song
DOI:10.1039/c7gc01161j
日期:——
highly regioselective synthesis of alkyl 1,2-bis(boronates) or 1,1,2-tris(boronates) from various terminalalkynes has been disclosed. These reactions are efficient, practical and mild with good regioselectivity, excellent functional group tolerance as well as good scalability, which provide general and complementary methods to access multiborylated alkanes from various terminalalkynes.
Iterative Stereospecific Reagent-Controlled Homologation of Pinacol Boronates by Enantioenriched α-Chloroalkyllithium Reagents
作者:Paul R. Blakemore、Matthew S. Burge
DOI:10.1021/ja068808s
日期:2007.3.1
Reaction of pinacol boronates with putative enantioenriched alpha-chloroalkyllithium species, generated in situ from homochiral alpha-chloroalkylsulfoxides by sulfoxide ligand exchange with t-BuLi in PhMe at -78 degrees C, gave chain-extended boronic ester products with generally excellent stereochemical fidelity. Iteration of this stereospecific reagent-controlled homologation (StReCH) process enabled the programmed synthesis of all four stereoisomers of a stereodiad-containing model system (4-benzyl-1,6-diphenylhexan-2-ol) with er >= 97:3 in all cases.
The Internal Condensation of 2,4-Diphenyl-1-butanesulfonyl Chloride to a Five- in Preference to a Seven-membered Cyclic Sulfone<sup>1</sup>
作者:William E. Truce、Donald D. Emrick、Robert E. Miller