Facile one-pot synthesis of tetrahydroisoquinolines from amino acids via hypochlorite-mediated decarboxylation and Pictet–Spengler condensation
作者:Justin J. Maresh、Sean O. Crowe、Arthur A. Ralko、Mark D. Aparece、Casey M. Murphy、Mark Krzeszowiec、Michael W. Mullowney
DOI:10.1016/j.tetlet.2014.07.043
日期:2014.9
A convenient method for oxidative decarboxylation of α-amino acids is presented. The aldehyde products may be isolated or converted to tetrahydroisoquinolines by addition of dopamine via Pictet–Spengler reaction. Racemic products are generated by phosphate buffer >300 mM to maximize regioselectivity. (S)-Enantiomer products are generated by norcoclaurine synthase reaction in maleic acid buffer to minimize
CARBAPENEM ANTIBACTERIAL COMPOUNDS, COMPOSITIONS CONTAINING SUCH COMPOUNDS AND METHODS OF TREATMENT
申请人:——
公开号:US20010020018A1
公开(公告)日:2001-09-06
The present invention relates to tricyclic carbapenem antibacterial agents in which the carbapenem nucleus is fused to a 6 membered carbocyclic ring. The compound is further substituted with various substituent groups including at least one cationic group.
The compounds are represented by formula I:
1
Pharmaceutical compositions and methods of use are also included.
The present invention relates to novel compounds of formula (I),
and salts, solvates and physiologically acceptable derivatives thereof, to a process for their manufacture, to pharmaceutical compositions containing them, and to their use in therapy, in particular their use in the prophylaxis and treatment of respiratory diseases.
Application of radical chemistry to solid support synthesis
作者:Sabine Berteina、Alain De Mesmaeker
DOI:10.1016/s0040-4039(98)01172-1
日期:1998.8
Radical cyclization of aryl iodides bound to polystyrene is described together with the trapping of the resulting radical, prior to its reduction, by allyltributyl tin. (C) 1998 Elsevier Science Ltd. All rights reserved.