A new approach to the synthesis of 4,5-dioxoaporphine alkaloids from preformed biaryl bond precursors
作者:Rafael Suau、Juan Manuel López-Romero、Rodrigo Rico、Francisco J. Alonso、Carolina Lobo
DOI:10.1016/0040-4020(96)00657-6
日期:1996.8
The synthesis of cepharadione-B and 2-demethoxy analogues is described. Starting from fluorenones, ring C was formed by cyclization of (biphenyl-2-yl)acetyl morpholines under Bischler-Napieralsky conditions. The photochemistry of chloroacetamides was used to form ring B. The cytotoxicity of these compounds on several tumor cell lines was evaluated.
PROCESS FOR THE PREPARATION OF PHARMACEUTICAL INTERMEDIATES
申请人:DIPHARMA FRANCIS S.R.L.
公开号:US20140309437A1
公开(公告)日:2014-10-16
Process for the preparation of intermediates that are useful in the synthesis of active pharmaceutical ingredients (API), in particular active in the central nervous system.
Process for the preparation of pharmaceutical intermediates
申请人:Dipharma Francis S.r.l.
公开号:EP2789605A1
公开(公告)日:2014-10-15
Process for the preparation of dibenzo[b,e]oxe-/thiepin-11-(6H9-one compounds that are useful intermediates in the synthesis of known tricycli antidepressants Doxepin and Dothiepin respectively.
visible-light-induced palladium-catalyzed cascade reaction was developed by etherification/C–C coupling cyclization of α-bromoacetophenones with phenols. A series of dibenzo[b,d]oxepin-7(6H)-one derivatives were efficiently synthesized by using this method in good yields. Furthermore, this method was applied to the synthesis of protosappanin A. The protocol has advantages such as simple reaction conditions,