presented that gives direct access to 1,1-disubstitutedtetrahydroisoquinolines. The reaction is a titanium(III)-catalyzed reductive umpolung process in which nitriles act as effective acylation agents. The method is highly chemo- and regioselective and is demonstrated in 20 examples. It is well-suited for the large-scale synthesis of functionalized tetrahydroisoquinoline products, which is exemplified in
[EN] SOMATOSTATIN RECEPTOR 1 AND/OR 4 SELECTIVE AGONISTS AND ANTAGONISTS<br/>[FR] RECEPTEUR 1 ET/OU 4 DE SOMATOSTATINE, AGONISTES ET ANTAGONISTES SELECTIFS
申请人:JUVANTIA PHARMA LTD OY
公开号:WO2005033068A1
公开(公告)日:2005-04-14
The invention relates to (hetero)arylsulfonylamino based peptidomimetics of formula (I), wherein R1, R3, A, B, D, Q, h and j are defined as disclosed, or a pharmaceutically acceptable salt or ester thereof. Compounds of formula (I) possess high affinity and selectivity for the somatostatin receptor subtypes SSTR1 and/or SSTR4 and can be used for the treatment or diagnosis of diseases or conditions wherein an interaction with SSTR1 and/or SSTR4 is indicated to be useful.
N1,N3-Diacyl-3,4-dihydropyrimidin-2(1H)-ones: neutral acyl group transfer reagents
作者:Kamaljit Singh、Kawaljit Singh
DOI:10.1016/j.tet.2009.10.037
日期:2009.12
Readily available N1,N3-diacyl-3,4-dihydropyrimidin-2(1H)-ones efficiently acylateammonia, primary and secondary amines to furnish primary, secondary and tertiary amides in good to excellent yields. The wide applicability of the procedure is demonstrated by running the reactions in a neutral medium, easy isolation of products, recycling of the innocuous by-product and chemoselectivity of the transformation
phenethylamine derivatives, underwent a direct aromatic carbonylation to afford five- or six-membered benzolactams. In the carbonylation, the chelation effect or steric repulsion between Pd(II) and the meta-substituent in the ortho-palladation and the ring sizes of cyclopalladation products that were formed prior to carbonylation were found to generate good site selectivity and increase the reaction rate. In
[EN] SUBSTITUTED 1,2,3,4-TETRAHYDROISOQUINOLINE DERIVATIVES<br/>[FR] DERIVES DE 1,2,3,4-TÉTRAHYDROISOQUINOLÉINE SUBSTITUÉS
申请人:ACTELION PHARMACEUTICALS LTD
公开号:WO2005118548A1
公开(公告)日:2005-12-15
The invention relates to novel 1,2,3,4-tetrahydroisoquinoline derivatives of formula (I) wherein R1, R2, R3 and X are as defined in the claims, and their use as active ingredients in the preparation of pharmaceutical compositions. The invention also concerns related aspects including processes for the preparation of the compounds, pharmaceutical compositions containing one or more of those compounds and methods of treatment comprising administration of said compounds to a mammal.