Novel piperidine compouds and drugs containing the same
申请人:——
公开号:US20030220368A1
公开(公告)日:2003-11-27
The present invention provides a novel compound having a superior Na
+
channel inhibition activity. Namely, it provides a compound represented by the following formula (I), a salt thereof or a hydrate of them.
1
In the formula, the ring A represents a ring represented by the formula:
2
(wherein R
1
represents a hydrogen atom etc.; and R
2
represents indicates a hydrogen atom and the like) etc.; W represents an optionally substituted C
1-6
alkylene group etc.; Z represents an optionally substituted C
6-14
aromatic hydrocarbon cyclic group etc.; and l represents an integer from 0 to 6.
Traceless Chelation-Controlled Rhodium-Catalyzed Intermolecular Alkene and Alkyne Hydroacylation
作者:Joel F. Hooper、Rowan D. Young、Andrew S. Weller、Michael C. Willis
DOI:10.1002/chem.201204056
日期:2013.2.25
A new functional‐group tolerant, rhodium‐catalyzed, sulfide‐reduction process is combined with rhodium‐catalyzed chelation‐controlled hydroacylation reactions to give a traceless hydroacylation protocol. Aryl‐ and alkenyl aldehydes can be combined with both alkenes, alkynes and allenes to give traceless products in high yields. A preliminary mechanistic proposal is also presented.
Direct Synthesis of Highly Substituted Pyrroles and Dihydropyrroles Using Linear Selective Hydroacylation Reactions
作者:Manjeet K. Majhail、Paul M. Ylioja、Michael C. Willis
DOI:10.1002/chem.201600311
日期:2016.6.1
diphosphine ligands, such as (Cy2 P)2 NMe or bis(diphenylphosphino)methane (dppm), are effective at catalysing the union of aldehydes and propargylic amines to deliver the linear hydroacylation adducts in good yields and with high selectivities. In situ treatment of the hydroacylation adducts with p-TSA triggers a dehydrative cyclisation to provide the corresponding pyrroles. The use of allylic amines, in place
Exploiting rhodium-catalysed ynamide hydroacylation as a platform for divergent heterocycle synthesis
作者:Robert N. Straker、Manjeet K. Majhail、Michael C. Willis
DOI:10.1039/c7sc03795c
日期:——
yield and excellent regioselectivity from the combination of aldehydes and ynamides. The enaminone products are subsequently used as a platform to construct a diverse array of substitutedpyrazoles, pyrimidines, and isoxazoles in a two-step, one-pot sequence. It was found that with judicious choice of catalyst system it was possible to overturn the regioselectivity of the hydroacylation reaction to
Diverse saturated heterocycles from a hydroacylation/conjugate addition cascade
作者:Ndidi U. N. Iwumene、Daniel. F. Moseley、Robert D. C. Pullin、Michael C. Willis
DOI:10.1039/d1sc06900d
日期:——
Rhodium-catalyzed hydroacylation using alkynes substituted with pendant nucleophiles, delivers linear α,β-unsaturated enone intermediates with excellent regioselectivity. These adducts are used to construct a broad range of diversely substituted, saturated O-, N- and S-heterocycles in a one-pot process. Judicious choice of cyclisation conditions enabled isolation of O-heterocycles with high levels