Compounds having the formula I wherein
wherein R
1
, R
2
, R
3b
, R
4a
, R
4b
, R
4c
and as defined herein are Hepatitis C virus NS5b polymerase inhibitors. Also disclosed are compositions and methods for treating an HCV infection and inhibiting HCV replication.
Trimethyl Phosphite as a Trap for Alkoxy Radicals Formed from the Ring Opening of Oxiranylcarbinyl Radicals. Conversion to Alkenes. Mechanistic Applications to the Study of C−C versus C−O Ring Cleavage
作者:Bangwei Ding、Wesley G. Bentrude
DOI:10.1021/ja020761x
日期:2003.3.1
and C-C (k(2)) cleavages of intermediate oxiranylcarbinylradical 2 and their reverse (k(-1), k(-2)). Diversion by (MeO)(3)P of allyloxyradicals (3) from haloepoxides 11 and 12 fulfills a prior prediction that under conditions closer to kinetic control, products of C-O scission, not just those of C-C scission, may result. Thus, for oxiranylcarbinylradicalsfrom haloepoxides 11, 12, and 13, C-O scission
A kinetic study of pyrolytic pathways to benzocyclobutene
作者:Peter Schiess、Suzanne Rutschmann、Van Vien Toan
DOI:10.1016/s0040-4039(00)88652-9
日期:1982.1
A simple gas flow reactor simulating flashvacuumpyrolysis conditions is described which yields appoximate rate values for monomolecular gas phase reactions and which has been used for a comparison and optimisation of pyrolytic elimination reactions leading to benzocyclobutene.
Osmium-Catalyzed 7-endo Heterocyclization of Aromatic Alkynols into Benzoxepines
作者:Alejandro Varela-Fernández、Cristina García-Yebra、Jesús A. Varela、Miguel A. Esteruelas、Carlos Saá
DOI:10.1002/anie.201000455
日期:——
The wizard of Os: Regioselective osmium‐catalyzed 7‐endo heterocyclization of aromaticalkynols affords benzoxepines in good yields. The proposed catalytic cycle involves the key formation of osmium–vinylidene complexes via an alkynyl‐hydride–osmium(IV) complex from the starting alkynol.
Derivatives of 4-piperazin-1-yl-4-benzo[b]thiophene suitable for the treatment of cns disorders
申请人:Yamashita Hiroshi
公开号:US20090264404A1
公开(公告)日:2009-10-22
A heterocyclic compound or a salt thereof represented by the formula (1): where R
2
represents a hydrogen atom or a lower alkyl group; A represents a lower alkylene group or lower alkenylene group; and R
1
represents an aromatic group or a heterocyclic group. The compound of the present invention has a wide treatment spectrum for mental disorders including central nervous system disorders, no side effects and high safety.