The 2,3-dioxy-1,4-anthraquinones (6) and (7) have been synthesized from the
9,10-anthraquinone (19), through the anthrone (18). Quinones (6) and (7)
respectively possess substituents appropriate for three of the four rings of
tetracenomycins C (2) and X (3) but they did not show dienophilic properties
towards the reactive diene (5). Interaction with the diene was complicated by
transsilylation, as was also observed for the model quinone
(25).
2,3-二氧-1,4-蒽醌 (6) 和 (7) 是由 9,10-蒽醌 (19) 通过蒽酮 (18) 合成的。
9,10-蒽醌 (19) 通过蒽酮 (18) 合成。醌 (6) 和 (7)
的四个环中的三个环的取代基。
醌(6)和(7)分别具有适合于四霉素 C(2)和 X(3)四个环中的三个环的取代基,但它们对活性二烯(5)并不表现出亲二烯烃的特性。
对活性二烯(5)的亲二烯性质。与二烯的相互作用因
与二烯烃的相互作用因硅烷基化而复杂化。
(25).