Synthesis of substituted γ- and δ-lactams based on titanocene(<scp>iii</scp>)-catalysed radical cyclisations of trichloroacetamides
作者:Faïza Diaba、Enrique Gómez-Bengoa、Juan M. Cuerva、Josep Bonjoch、José Justicia
DOI:10.1039/c6ra12180b
日期:——
A new procedure for the synthesis of γ- and δ-lactams based on a Cp2TiCl-catalysed cyclisation of trichloroacetamides under mild reaction conditions is reported. Theoretical studies supported the observed regioselectivity in the cyclisations and the mechanism involved in the dehalogenation process.
HETEROCYCLIC COMPOUNDS FOR THE TREATMENT OF STRESS-RELATED CONDITIONS
申请人:Takahashi Akira
公开号:US20120065189A1
公开(公告)日:2012-03-15
The present invention provides a novel heterocyclic compound. A heterocyclic compound represented by general formula (1) wherein, R
1
and R
2
, each independently represent hydrogen; a phenyl lower alkyl group that may have a substituent(s) selected from the group consisting of a lower alkyl group and the like on a benzene ring and/or a lower alkyl group; or a cyclo C3-C8 alkyl lower alkyl group; or the like; R
3
represents a lower alkynyl group or the like; R
4
represents a phenyl group that may have a substituent(s) selected from the group consisting of a 1,3,4-oxadiazolyl group that may have e.g., halogen or a heterocyclic group selected from pyridyl group and the like; the heterocyclic group may have at least one substituent(s) selected from a lower alkoxy group and the like or a salt thereof.
Modulators of cystic fibrosis transmembrane conductance regulator, pharmaceutical compositions, methods of treatment, and process for making the modulators
申请人:Vertex Pharmaceuticals Incorporated
公开号:US11066417B2
公开(公告)日:2021-07-20
Compounds of Formula (I):
pharmaceutically acceptable salts thereof, deuterated derivatives of any of the foregoing, and metabolites of any of the foregoing are disclosed. Pharmaceutical compositions comprising the same, methods of treating cystic fibrosis using the same, and methods for making the same are also disclosed.
Synthesis of pyrrolidines and pyrrolidinones by the rhodium complex catalyzed cyclization of unsaturated amines
作者:Jian Qiang Zhou、Howard Alper
DOI:10.1021/jo00038a019
日期:1992.6
N-Allylic arylamines react with carbon monoxide, sodium borohydride, 2-propanol, and catalytic amounts of the zwitterionic complex eta-6-C6H6BPh3-Rh(COD)+ (1), to form pyrrolidines as the main products in most cases. Pyrrolidinones result from N-allylic alkylamines. An alternate route to the lactams from N-allylic alkylamines involves synthesis gas instead of CO/NaBH4, together with the dual catalytic system 1/[Ru(CO)3Cl2]2. Complementary to the N-allylic arylamine route to pyrrolidines with NaBH4 and 1 is the use of synthesis gas, 1, and 1,4-bis(diphenylphosphino)butane.