Direct biocatalysed synthesis of first sulfur-, selenium- and tellurium- containing l-ascorbyl hybrid derivatives with radical trapping and GPx-like properties
A compound having GPR52 agonist activity or a salt thereof is provided.
The compound can be provided as a preventive/therapeutic agent for schizophrenia or the like. The compound is represented by the following formula:
wherein
A represents —CONR
a
— or —NR
a
CO—,
R
a
represents a hydrogen atom or the like,
B represents a hydrogen atom or the like,
a ring Cy1 represents a six-membered aromatic ring which may have one or more substituents in addition to a group represented by -A-B,
a ring Cy2 represents a six-membered ring which may be substituted with a halogen atom or the like,
a ring Cy3 represents a five- or six-membered ring which may have one or more substituents;
X represents C
1-2
alkylene or the like,
m represents an integer of 0 to 2, and
a ring Cy4 represents a six-membered aromatic ring which may have one or more substituents.
Baliah, V.; Gurumurthy, R., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1982, vol. 21, # 3, p. 257 - 258
作者:Baliah, V.、Gurumurthy, R.
DOI:——
日期:——
A general synthesis of N-substituted 1,4-benzoxazine- and 1,4-benzothiazine-2-carboxylates via copper-catalyzed intramolecular amination of arylbromides
Starting from ortho-bromosubstituted phenoxyacetates or (phenythio)acetates and primary amines, various N-substituted 4H-1,4-benzoxazine- and 4H-1,4-benzothiazine-2-carboxylates were synthesized in moderate to high yields by using a Cu(I)-catalyzed Ullmann-type cyclization as a key step. The method is simple to operate, tolerates many functional groups and does not require any additives. (C) 2011 Elsevier Ltd. All rights reserved.
Sulfoxide Reduction/C(sp<sup>3</sup>)–S Metathesis Cascade in Ionic Liquid
A sulfoxide reduction/C-S bond metathesis cascade between sulfoxides and alkyl bromides has been developed to access high-value sulfides without the use of any catalysts or bases. In this cascade, classical Kornblum oxidation is employed to reduce sulfoxides with alkyl bromides in ionic liquid. This protocol features high functional tolerance, mild conditions, promising scalability, and sustainable solvents.
Direct biocatalysed synthesis of first sulfur-, selenium- and tellurium- containing <scp>l</scp>-ascorbyl hybrid derivatives with radical trapping and GPx-like properties
作者:Damiano Tanini、Beatrice Lupori、Gianni Malevolti、Moira Ambrosi、Pierandrea Lo Nostro、Antonella Capperucci
DOI:10.1039/c9cc02427a
日期:——
6-O-l-Ascorbyl selenoesters, thioesters and telluroesters can be efficiently and directly prepared from l-ascorbic acid and suitable functionalised chalcogenoesters through lipase-catalysed transesterification reactions.