Practical and regioselective amination of arenes using alkyl amines
作者:Alessandro Ruffoni、Fabio Juliá、Thomas D. Svejstrup、Alastair J. McMillan、James J. Douglas、Daniele Leonori
DOI:10.1038/s41557-019-0254-5
日期:2019.5
these molecules are assembled through the stepwise introduction of a reactivity handle in place of an aromatic C-H bond (that is, a nitro group, halogen or boronic acid) and a subsequent functionalization or cross-coupling. Here we show that aromaticamines can be constructed by direct reaction of arenes and alkyl amines using photocatalysis, without the need for pre-functionalization. The process
The present invention aims to provide a compound having a PDE inhibitory action and useful as a medicament for the prophylaxis or treatment of schizophrenia and the like.
A compound represented by the formula (1
x
):
wherein each symbol is as described in the DESCRIPTION, or the formula (1):
W
1
—W
2
(1)
wherein each symbol is as described in the DESCRIPTION,
or a salt thereof.
Novel substituted piperidines of the general formulae (I) and (II) with the substituent definitions as explained in detail in the description are described. The compounds are suitable in particular as renin inhibitors and are highly potent.
Penem derivatives and antimicrobial agents containing the same
申请人:SUNTORY LIMITED
公开号:EP0774465A1
公开(公告)日:1997-05-21
Penem derivatives represented by the following Formula (I):
wherein Z represents a hydroxyl group or a fluorine atom, R1 represents a substituted or unsubstituted alkyl, alkenyl, aralkyl group, aryl group, heterocyclic, or acyl group, or a hydrogen atom, and R2 represents a hydrogen atom or a carboxyl-protecting group; and pharmacologically acceptable salts thereof are antibacterial agents effective against, inter alia, methicillin-resistant Staphylococcus aureus. The derivatives and salts are novel except when R1 is ethyl and Z is hydroxyl. The analogous compounds in which R2 is a carboxyl-protecting group and any hydroxyl group represented by Z is protected are novel process intermediates.
Multiheterocyclic Motifs via Three-Component Reactions of Benzynes, Cyclic Amines, and Protic Nucleophiles
作者:Sean P. Ross、Thomas R. Hoye
DOI:10.1021/acs.orglett.7b03458
日期:2018.1.5
general, three-component reaction strategy for the construction of compounds containing multiple heterocycles is described. Thermal benzyne formation (by the hexadehydro-Diels–Alder (HDDA) reaction) in the presence of tertiary cyclic amines and a protic nucleophile (HNu) gives, via ring-opening of intermediate ammonium ion/Nu– ion pairs, heterocyclic products. Many reactions are efficient even when