The present invention provides a compound having a superior acid secretion inhibitory effect and showing an antiulcer activity and the like. The present invention provides a compound represented by the formula (I)
wherein R
1
is a nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle, the nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle optionally has substituent(s), R
2
is an optionally substituted C
6-14
aryl group, an optionally substituted thienyl group or an optionally substituted pyridyl group, R
3
and R
4
are each a hydrogen atom, or one of R
3
and R
4
is a hydrogen atom and the other is an optionally substituted lower alkyl group, an acyl group, a halogen atom, a cyano group or a nitro group, and R
5
is an alkyl group or a salt thereof.
Diastereoselective synthesis of polysubstituted cyclopentanols and cyclopentenes containing stereogenic centers via domino Michael/cyclization reaction
作者:S. Ahadi、Z. Naghdiani、S. Balalaie、F. Rominger
DOI:10.1016/j.tet.2015.07.022
日期:2015.9
A highly efficient domino Michael/cyclization reaction was developed for the synthesis of cyclopentanols and cyclopentenes with four and three stereogeniccenters that were generated in one-pot reaction conditions with high diastereoselectivity. The reactions proceeded through a one-pot three-component reaction of β-nitrostyrenes, malononitrile and phenacyl bromide derivatives in basic media at room
Chiral iminophosphorane catalyzed asymmetric sulfenylation of 2-substituted alkylcyanoacetates
作者:Yanxia Zhang、Henry N.C. Wong、Xin-Yan Wu、Jianwei Han
DOI:10.1016/j.tetlet.2020.151755
日期:2020.4
Chiral iminophosphorane organocatalysis enables a wide range of asymmetric transformations with excellent level of enantioselectivity. Herein, an asymmetric sulfenylation of 2-substituted alkylcyanoacetates was achieved with tartaric acid derived chiral iminophosphoranes in an efficient manner. The iminophosphorane catalyst exhibits high catalytic activity, and as a result, the corresponding sulfenylated
The present invention relates to thienopyrrole compounds of formula (I); wherein A, B, Y, Ar, n, Z and X
1
are as defined herein, and pharmaceutically acceptable salts thereof, useful in the prevention and treatment of hepatitis C infections.
The present invention provides a compound having a superior acid secretion inhibitory effect and showing an antiulcer activity and the like. The present invention provides a compound represented by the formula (I) wherein R
1
is a nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle, the nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle optionally has substituent(s), R
2
is an optionally substituted C
6-14
aryl group, an optionally substituted thienyl group or an optionally substituted pyridyl group, R
3
and R
4
are each a hydrogen atom, or one of R
3
and R
4
is a hydrogen atom and the other is an optionally substituted lower alkyl group, an acyl group, a halogen atom, a cyano group or a nitro group, and R
5
is an alkyl group or a salt thereof.