Stereospecific Photochemical Cyclization of Azidoquinone with<i>E</i>,<i>E</i>- and<i>Z</i>,<i>Z</i>-Dienes. Application to the Synthesis of an Important Precursor toward Mitomycins
作者:Yoshinori Naruta、Naoshi Nagai、Tadafumi Yokota、Kazuhiro Maruyama
DOI:10.1246/cl.1986.1185
日期:1986.7.5
Photochemical reaction of 5-azido-2-methoxy-3-methyl-1,4-benzo quinone with cis,cis-2,4-hexadien-1,6-diol derivatives stereoselectively affords the corresponding 2,3-dihydroindolequinone, which possesses trans configuration at 2,3-position and vinylic double bond preserves the original stereochemistry of the diene. It is efficiently converted to a key precursor in mitomycin synthesis.
5-azido-2-methoxy-3-methyl-1,4-benzo quinone 与顺式、顺式-2,4-己二烯-1,6-二醇衍生物发生光化学反应,立体选择性地生成相应的 2,3-二氢吲哚醌,它在 2,3 位具有反式构型,乙烯基双键保留了二烯原有的立体化学结构。它能有效地转化为丝裂霉素合成的一种关键前体。