New and Practical Method for Synthesis of 1- and 1,3-Substituted Xanthines
作者:Ilia A. Zavialov、Vilas H. Dahanukar、Hoa Nguyen、Cecilia Orr、David R. Andrews
DOI:10.1021/ol049272n
日期:2004.6.1
[reaction: see text] A new and practical method for the synthesis of 1- and 1,3-substituted xanthines is reported. Direct base-promoted condensation of the imidazole precursor 1 with carbamates 2 gives 1-substituted 7-PMB xanthines 7 in good yields. Alkylation of these derivatives or their potassium salts proceeds under mild conditions to give functionalized 1,3-substituted 7-PMB xanthines 9 in good
[EN] PROCESS FOR PREPARING XANTHINE PHOSPHODIESTERASE V INHIBITORS AND PRECURSORS THEREOF<br/>[FR] PROCEDE DE PREPARATION D'INHIBITEUR DE LA PHOSPHODIESTERASE V DE LA XANTHINE
申请人:SCHERING CORP
公开号:WO2003101992A1
公开(公告)日:2003-12-11
A process for preparing xanthine phosphodiesterase V inhibitors, and compounds utilized in said process. The process includes a five-step methodology for efficient synthesis of Compound (5) without intermediate purifications or separations, a dihalogenation step to synthesize Compound (7), and a coupling reaction to produce Compound (9).
The present invention relates to compounds which are xanthine derivatives, processes for the manufacture of said derivatives, pharmaceutical formulations containing the active compounds and the use of the compounds in therapy, for example, in the treatment of diseases where under-activation of the HM74A receptor contributes to the disease or where activation of the receptor will be beneficial.
[EN] DERIVATIVES OF L-PLIENYL-1.5-DILIYDIO-BENZO[B] [1.4]DIAZEPINE-2.4-DIONE AS INHIBITORS OF HIV REPLICATION<br/>[FR] DÉRIVÉS DE 1-PHÉNYL-1,5-DIHYDRO-BENZO[B] [1.4]DIAZÉPINE-2.4-DIONE EN TANT QU'INHIBITEURS DE LA RÉPLICATION DU VIH