Synthesis of (±)-4-Demethoxydaunomycinone by Double<i>Diels-Alder</i>Additions to 2, 3, 5, 6-Tetramethylidene-7-oxanorbornane
作者:Yvonne Bessière、Pierre Vogel
DOI:10.1002/hlca.19800630123
日期:1980.1.23
12-octahydro-2-naphtacenyl) methyl ketone (10) which, in few steps was oxidized to a precursos of (±)-4-demethoxydaunomycinone. The preparations of two precursors of anthracyclinones, the (5-acetoxy-) and (12-acetoxy-1, 2, 3, 4-tetrahydro-2-naphtacenyl) methyl ketones (14, 15) are presented. The synthesis of 6, 13-epoxy-6, 13-dihydropentacene (8) is also reported.
在2,3,5,6-6-四亚甲基-7-氧杂硼烷(4)中顺序添加Diels-Alder甲基乙烯基酮和脱氢苯,得到(5,12-环氧-1,2,3,4,4,5,6,11 ,在几个步骤中被氧化成(±)-4-脱甲氧基金牛烯酮的前体的12-八氢-2-萘并萘基)甲基酮(10)。提出了蒽环酮的两种前体((5-乙酰氧基-)和(12-乙酰氧基-1,2,3,4-四氢-2-萘并噻吩基)甲基酮(14、15)的制备。还报道了6,13-环氧-6,13-二氢并五苯的合成(8)。