Orthocarbonsäure-ester mit 2,4,10-Trioxaadamantanstruktur als Carboxylschutzgruppe; Verwendung zur Synthese von substituierten Carbonsäuren mit Hilfe von<i>Grignard</i>-Reagenzien
作者:Gundula Voss、Hans Gerlach
DOI:10.1002/hlca.19830660741
日期:1983.11.2
Ortho Esters with 2,4,10-Trioxaadamantane Structure as Carboxyl Protecting Group; Applications in the Synthesis of Substituted Carboxylic Acids by Means of Grignard Reagents
enantioselective addition to aldehydes by using a titanium(IV) catalyst derived from a H8‐binaphthol derivative in the presence of [Ti(OiPr)4] and MgBr2. A range of functionalities, including olefin, chlorine atoms, protected alcohols, amides, and cyano groups, are tolerated in the present reaction, providing the corresponding functionalized alcohols in high yields and enantioselectivities (see scheme)
在[Ti(O i Pr)4 ]和MgBr 2存在下,使用衍生自H 8-联萘酚衍生物的钛(IV)催化剂,可以将官能化的烷基卤化锌用于醛的对映选择性加成反应。在本反应中可以耐受多种官能团,包括烯烃,氯原子,受保护的醇,酰胺和氰基,从而以高收率和对映选择性提供相应的官能化醇(参见方案)。
[EN] BETA-AMYLOID-DIRECTED MULTITARGET COMPOUNDS FOR THE TREATMENT OF ALZHEIMER'S DISEASE<br/>[FR] COMPOSÉS À CIBLES MULTIPLES DIRIGÉS CONTRE LA PROTÉINE BÊTA-AMYLOÏDE POUR LE TRAITEMENT DE LA MALADIE D'ALZHEIMER
申请人:UNIV BARCELONA
公开号:WO2013167711A1
公开(公告)日:2013-11-14
The compounds of formula (I), or its pharmaceutically acceptable salts, or any stereoisomer or mixture thereof, wherein: R1 is a (C1-C2) alkyl radical; R2 and R3 are radicals independently selected from the group consisting of F, CI and methyl R4 is H or OH; A is a birradical selected from the group consisting of -(CH2)n- and -(CH2)-phenyl-(CH2)-; t is an integer from 0 to 1; and n is an integer from 8 to 15, are useful for the treatment of Alzheimer's disease.
Leukotriene B4 receptor antagonists: the LY255283 series of hydroxyacetophenones
作者:David K. Herron、Theodore Goodson、Nancy G. Bollinger、Dorothy Swanson-Bean、Ian G. Wright、Gilbert S. Staten、Alan R. Thompson、Larry L. Froelich、William T. Jackson
DOI:10.1021/jm00088a018
日期:1992.5
A series of hydroxyacetophenones was prepared for evaluation as leukotrieneB4 (LTB4) receptorantagonists, culminating in 1-[5-ethyl-2-hydroxy-4-[[6-methyl-6-(1H-tetrazol-5- yl)heptyl]oxy]phenyl]ethanone (compound 35, LY255283). Using an assay for inhibition of specific [3H]LTB4 binding to human PMN, we found that substitution of a nonpolar substituent in the 5-position was required for activity.