Purification of 2,3,6,7,10,11-Hexamtheoxytriphenylene and Preparation of Hexakiscarbonylmethyl and Hexakiscyanomethyl Derivatives of 2,3,6,7,10,11-Hexahydroxytriphenylene
作者:Frederik C. Krebs、Niels C. Schiødt、Walther Batsberg、Klaus Bechgaard
DOI:10.1055/s-1997-3188
日期:1997.11
2,3,6,7,10,11-Hexahydroxytriphenylene (1) was subjected to an improved purification procedure and demethylated to give 2,3,6,7,10,11-hexahydroxytriphenylene (2) as the relatively stable trihydrate. Compound 2 was alkylated with reactive halogen reagents given 2,3,6,7,10,11-hexakis(cyanomethyl)triphenylene (3), 2,3,6,7,10,11-hexakis(N,N-diethylcarbamoylmethyloxy)triphenylene (4) and 2,3,6,7,10,11-hexakis(ethoxycarbonylmethyloxy)triphenylene (5). Reduction of 4 gave 2,3,6,7,10,11-hexakis(diethyl-aminoethyloxy)triphenylene (6) and reduction of 5 followed by acetylation gave 2,3,6,7,10,11-hexakis(carboxymethyloxy)triphenylene (8). Compound 8 could be converted to its corresponding active N-hydroxysuccinimide ester (9) by the DCC method. Compound 9 was found to be a versatile core molecule that could be coupled with glycine-t-butyl ester, L-phenylalanine and L-phenylalanine-t-butyl ester giving compounds 10, 11 and 12.
2,3,6,7,10,11-六羟基三苯ylene(1)经过改进的纯化程序后进行了去甲基化,得到相对稳定的三水合物2,3,6,7,10,11-六羟基三苯ylene(2)。化合物2与活性卤素试剂发生烷基化反应,生成2,3,6,7,10,11-六(氰甲基)三苯ylene(3),2,3,6,7,10,11-六(N,N-二乙基氨基甲氧基)三苯ylene(4)和2,3,6,7,10,11-六(乙氧基羧甲基)三苯ylene(5)。化合物4的还原反应得到2,3,6,7,10,11-六(二乙基氨基乙氧基)三苯ylene(6),而化合物5经过还原和acetylation反应得到2,3,6,7,10,11-六(羧甲氧基)三苯ylene(8)。化合物8可以通过DCC法转化为其相应的活性N-羟基琥珀酰亚胺酯(9)。发现化合物9是一个多功能的核心分子,可以与甘氨酸-t-丁基酯、L-苯丙氨酸和L-苯丙氨酸-t-丁基酯发生耦合反应,生成化合物10、11和12。