[EN] PIPERIDINYL COMPOUNDS THAT SELECTIVELY BIND INTEGRINS<br/>[FR] COMPOSES DE PIPERIDINYLE LIANT SELECTIVEMENT LES INTEGRINES
申请人:JANSSEN PHARMACEUTICA NV
公开号:WO2004020435A1
公开(公告)日:2004-03-11
The invention is directed to piperidinyl compounds of formula (I) and (II) that selectively bind integrin receptors and methods for treating an integrin mediated disorder, wherein W, R2, Z and q are described in the application.
Abstract We describe the firsttotalsynthesis of the pyrano[3,2-a]carbazole alkaloid 7-isovaleryloxy-8-methoxygirinimbine, using a palladium(II)-catalyzed double C–H-bond activation for construction of the carbazole framework and a phenylboronic acid catalyzed annulation of the pyran ring as key steps. We describe the firsttotalsynthesis of the pyrano[3,2-a]carbazole alkaloid 7-isovaleryloxy-8-methoxygirinimbine
摘要 我们描述了吡喃并[3,2- a ]咔唑生物碱7-异戊酰氧基-8-甲氧基吉里宁的第一个全合成,使用钯(II)催化的双CH键结合构造咔唑骨架和苯硼酸酸催化吡喃环的环化为关键步骤。 我们描述了吡喃并[3,2- a ]咔唑生物碱7-异戊酰氧基-8-甲氧基吉里宁的第一个全合成,使用钯(II)催化的双CH键结合构造咔唑骨架和苯硼酸酸催化吡喃环的环化为关键步骤。
An Oxidative Dearomatization Approach to Tetrodotoxin via a Masked <i>ortho</i>-Benzoquinone
作者:Jacob G. Robins、Jeffrey S. Johnson
DOI:10.1021/acs.orglett.1c03998
日期:2022.1.21
Oxidative dearomatization of a tetrasubstituted guaiacol arene yielded a masked ortho-benzoquinone that intercepted an acyl nitroso species generated in situ by the copper-catalyzedaerobic oxidation of an acyl hydroxylamine. The subsequent alkene dihydroxylation and reduction of a bis-neopentylic ketone proceeded with perfect diastereoselectivity to reveal advanced intermediates toward the synthesis
Novel proton type beta zeolite, preparation method thereof and process for preparing phenol compound using the same
申请人:UBE INDUSTRIES, LTD.
公开号:US20040242938A1
公开(公告)日:2004-12-02
Disclosed are a proton type &bgr; zeolite in which an acid site showing a desorption peak with a range of ±100° C. with a center of 330° C. exists in a spectrum measured by the ammonia temperature programmed desorption method (NH
3
-TPD), and an amount of a strong acid site showing a desorption peak of 500° C. or higher is controlled to 2.5 &mgr;mol/g or less, a method for preparing the same, and a process for preparing a phenol compound by oxidizing a benzene compound with a peroxide in the presence of the proton type &bgr; zeolite.
PROCESS FOR PREPARING AN ORTHO-SUBSTITUTED 5-HALOPHENOL AND A SYNTHESIS INTERMEDIATE THEREOF
申请人:Mercier Claude
公开号:US20130066097A1
公开(公告)日:2013-03-14
A process for preparing a 5-halophenol, ortho-substituted by an electron-donating group, is described. Also described, is a process for preparing a sulphonic ester of an ortho-substituted phenol, which is the synthesis intermediate for the ortho-substituted 5-halophenol. The process for preparing a phenol ortho-substituted by an electron-donating group and protected in the form of a sulphonic ester can include reacting a phenol ortho-substituted by an electron-donating group with a sulphonylating agent in the presence of a Lewis acid. The process for preparing a 5-halophenol ortho-substituted by an electron-donating group can include a first step of preparing a phenol ortho-substituted by an electron-donating group and protected in the form of a sulphonic ester, as described above; a second step of halogenating the protected phenol intermediate obtained in the preceding step, in the position para to the electron-donating group; and a third step of deprotecting the sulphonic ester function to hydroxyl.