Compounds of the general formula (I):
1
or a salt thereof, wherein R
1
is hydrogen, hydroxyl or halogen; R
2
is NHSO
2
CH
3
, SO
2
NHCH
3
or the like; R
5
and R
6
each independently is hydrogen, C
1-6
alkyl, optionally substituted phenyl or optionally substituted benzyl; X is NH, sulfur, oxygen or methylene; Y is oxygen, NR
7
, sulfur, methylene or a bond; and * represents an asymmetric carbon atom.
The compounds are useful as a medicine for treating or preventing diabetes, obesity, hyperlipidemia, digestive diseases, depression or urinary disturbances.
Compounds of the general formula (I):
or a salt thereof, wherein R1 is hydrogen, hydroxyl or halogen; R2 is NHSO2CH3, SO2NHCH3 or the like; R5 and R6 each independently is hydrogen, C1-6 alkyl, optionally substituted phenyl or optionally substituted benzyl; X is NH, sulfur, oxygen or methylene; Y is oxygen, NR7, sulfur, methylene or a bond; and * represents an asymmetric carbon atom.
The compounds are useful as a medicine for treating or preventing diabetes, obesity, hyperlipidemia, digestive diseases, depression or urinary disturbances.
A palladium-catalyzed Barluenga cross-coupling – Reductive cyclization sequence to substituted indoles
作者:S.M. Ashikur Rahman、Björn C.G. Söderberg
DOI:10.1016/j.tet.2021.132331
日期:2021.8
A short and flexible synthesis of substituted indoles employing two palladium-catalyzed reactions, a Barluenga cross-coupling of p-tosylhydrazones with 2-nitroarylhalides followed by a palladium–catalyzed, carbon monoxide–mediated reductive cyclization has been developed. A one-pot, two-step methodology was further developed, eliminating isolation and purification of the cross-coupling product. This