Convenient Syntheses of Dibenzo[<i>c,p</i>]chrysene and Its Possible Proximate and Ultimate Carcinogens: In Vitro Metabolism and DNA Adduction Studies
作者:Arun K. Sharma、Jyh-Ming Lin、Dhimant Desai、Shantu Amin
DOI:10.1021/jo040291k
日期:2005.6.1
Dibenzo[c,p]chrysene (DB[c,p]C) is the only hexacyclic polycyclic aromatic hydrocarbon having two fjord regions, both in different chemical environments. Its environmental presence and relative tumorigenic potency are not known due to the lack of synthetic standards. We report here the synthesis of dibenzo[c,p]chrysene (1), its proximate carcinogens, i.e., trans-1,2-dihydroxy-1,2-dihydro-DB[c,p]C (2)
二苯并[ c,p ]丙烯(DB [ c,p ] C)是唯一在两个不同化学环境中都具有两个峡湾区的六环多环芳烃。由于缺乏合成标准品,其环境存在性和相对致瘤效力尚不清楚。我们在这里报告了二苯并[ c,p ]((1)的合成,它是最接近的致癌物,即反式-1,2-二羟基-1,2-二氢-DB [ c,p ] C(2)和反式- 11,12-二羟基-11,12-二氢- DB [ C,p ] C(3),以及可能的最终致癌物,即反-反式-1,2-二羟基-3,4-环氧-1,2,3,4-四氢-DB [ c,p ] C(4)和反-反-11,12-二羟基-13,14-环氧- 11,12,13,14-四氢-DB [ c,p ] C(5)。首先使用Suzuki交叉偶联反应尝试合成1和适当甲氧基取代的DB [ c,p ] C(12和27),这是合成其近端和最终代谢产物的关键中间体。但是,烯烃的环化(10和11)产生的所需产