[1+1+1] Cyclotrimerization for the Synthesis of Cyclopropanes
作者:Srimanta Manna、Andrey P. Antonchick
DOI:10.1002/anie.201600807
日期:2016.4.18
The synthesis of small rings by functionalization of C(sp(3) )-H bonds remains a great challenge. We report for the first time a copper-catalyzed [1+1+1] cyclotrimerization of acetophenone derivatives under mild reaction conditions. The reaction has a broad scope for the stereoselective synthesis of cyclopropanes by trimerization of acetophenone. The developed transformation is based on an extraordinary
Synthesis and Antibacterial and Anticancer Evaluations of α-Methylene-γ-butyrolactones
作者:Ned D. Heindel、John A. Minatelli
DOI:10.1002/jps.2600700117
日期:1981.1
Abstract Nine new α-methylene-γ-butyrolactones were synthesized by the Reformatsky condensation of ethyl α-bromomethylacrylate with kelones, aldehydes, and an epoxide. A. unique spirobutyrolactone class was prepared by reaction of the zinc alkyl derivative and N -methylisatins. The compounds were evaluated against L-1210 and P-388 leukemia and the 9KB carcinoma of the nasopharynx. They also were screened
[Amino sulfonyl-2-oxo-nicotinyl]derivatives of cephalosporin
申请人:Warner-Lambert
公开号:US04137408A1
公开(公告)日:1979-01-30
Novel organic amide compounds which are N-[6-[(aminosulfonyl)phenyl]-1,2-dihydro-2-oxonicotinyl]penicillin and cephalosporin type compounds having broad spectrum antibacterial utility are provided by (a) reacting the free amino acid of the appropriate penicillin or cephalosporin or the acid salt or silylated derivative or complex thereof with a reactive derivative of the corresponding N-6-[(aminosulfonyl)phenyl]-1,2-dihydro-2-oxonicotinic acid or (b) reacting the free amino acid 6-aminopenicillanic acid, 7-aminocephalosporanic acid, 7-amino-3-methylceph-3-em-4-carboxylic acid or a related compound or the acid salt or silylated derivative thereof with a reactive derivative of the corresponding D-N-[6-[(aminosulfonyl)phenyl]-1,2-dihydro-2-oxonicotinyl]-2-substituted glycine. Pharmaceutical compositions containing said compounds and methods for treating infections using said compositions are also disclosed.
Synthesis and structure–activity relationship of aminopyrimidine IKK2 inhibitors
作者:Alistair H. Bingham、Richard J. Davenport、Richard Fosbeary、Lewis Gowers、Roland L. Knight、Christopher Lowe、David A. Owen、David M. Parry、Will R. Pitt
DOI:10.1016/j.bmcl.2008.04.062
日期:2008.6
The synthesis and structure-activity relationship of a novel series of aminopyrimidines are exemplified. Results of key compounds from within this series in the E-selectin reporter cell assay are also reported. (C) 2008 Elsevier Ltd. All rights reserved.
CHEMICAL COMPOUNDS HAVING ANTIVIRAL ACTIVITY AGAINST DENGUE VIRUS AND OTHER FLAVIVIRUSES