Structure-activity relationships in the 2-arylcarbapenem series. Synthesis of 1-methyl-2-arylcarbapenems
作者:Ravindra Nath Guthikonda、L. D. Cama、M. Quesada、M. F. Woods、T. N. Salzmann、B. G. Christensen
DOI:10.1021/jm00388a022
日期:1987.5
tert-butyldimethylsilyl esters of the azetidinones 6-8b served as the crucial synthons in the preparation of the potentially useful ylide pyridyl thio esters 18-20. These intermediates were utilized to synthesize a host of title carbapenems 25-30d, 32, and 49-53. The antimicrobial properties and DHP-I susceptibility of these carbapenems were studied with reference to thienamycin.
Asymmetric total synthesis of erythromycin. 2. Synthesis of an erythronolide A lactone system
作者:R. B. Woodward、B. W. Au-Yeung、P. Balaram、L. J. Browne、D. E. Ward、B. W. Au-Yeung、P. Balaram、L. J. Browne、P. J. Card、C. H. Chen
DOI:10.1021/ja00401a050
日期:1981.6
In reporting a total synthesis of erythromycin (la) we described in the preceding paper1 the synthesis of the erythronolide A seco acid derivative 2 in optically active form. In this paper we wish to report a successful transformation of 2 to 12 (synthetically equivalent to erythronolide A) via lactonization and also demonstrate that the proper functionalization of a substrate is critical for the successful
作者:L.D. Cama、Kenneth J. Wildonger、Ravindranath Guthikonda、R.W. Ratcliffe、B.G. Christensen
DOI:10.1016/s0040-4020(01)92147-7
日期:1983.1
The total syntheses of 2-aryl and 2-heteroaryl carbapen-2-em-3-carboxylic acids with and without a 6-hydroxyethyl side chain, using a Wittig cyclization for formation of the bicyclic ring system is described. Antibacterial activity of the compounds synthesized is discussed.
PROCESSES AND INTERMEDIATES FOR THE PREPARATIONS OF ISOMER FREE PROSTAGLANDINS
申请人:CHIROGATE INTERNATIONAL INC.
公开号:US20150051410A1
公开(公告)日:2015-02-19
Novel processes for the preparation of a compound of Formula I-2 substantially free of the 5,6-trans isomer:
wherein
R
2
, R
3
and R
4
are as defined in the specification are provided. Novel intermediates for the preparations of isomer free Prostaglandins and derivatives thereof are also provided.
Derivatives of amphetamine, antibodies against said derivatives, reagent kits, methods of producing said antibodies, and methods of detecting said derivatives
申请人:Roche Diagnostics GmbH
公开号:EP1340980A1
公开(公告)日:2003-09-03
Compounds including haptens, intermediates, and immunogens that are useful in the production of antibodies specific for the methylenedioxy class of amphetamine derivatives are described. Antibodies specific for the methylenedioxy class of amphetamine derivatives, reagent kits containing antibodies specific for the methylenedioxy class of amphetamine derivatives, methods of producing antibodies specific for the methylenedioxy class of amphetamine derivatives, and methods of detecting analytes including members of the methylenedioxy class of amphetamine derivatives are also described.