Substrate Specificities of Several Prenyl Chain Elongating Enzymes with Respect to 4-Methyl-4-pentenyl Diphosphate
作者:Masahiko NAGAKI、Yohei MIKI、Minori NAKADA、Jun KAWAKAMI、Haruo KITAHARA、Yuji MAKI、Yoshinori GOTOH、Tokuzo NISHINO、Tanetoshi KOYAMA
DOI:10.1271/bbb.68.2070
日期:2004.1
In order to develop synthetic methods for biologically active homoallylic terpene sulfates, we examined the applicability and substrate specificities of several prenyl chain elongating enzymes with respect to 4-methyl-4-pentenyl diphosphate (homoIPP).The reaction of dimethylallyl diphosphate with homoIPP by use of Bacillus stearothermophilus (all-trans)-farnesyl diphosphate synthase resulted in efficient yields of cis-(yield: 45.9%) and trans-4,8-dimethylnona-3,7-dien-1-ol (homoGOH, 25.5%), which has a carbon skeleton of 4,8-dimethylnona-3-en-1-sulfate, an antiproliferative compound from a marine organism (Aiello, A. et al., Tetrahedron, 53, 11489–11492 (1997)). The homoIPP was found to be also active as a homoallylic substrate in place of isopentenyl diphosphate for Sulfolobus acidocaldarius geranylgeranyl diphosphate synthase to give diphosphate of cis- and trans-4,8,12-trimethyltrideca-3,7,11-trien-1-ol, for Micrococcus luteus B-P 26 hexaprenyl diphosphate synthase to give cis- and trans-4,8,12,16-tetramethylheptadeca-3,7,11,15-tetraen-1-ol (homoGGOH), and for Micrococcus luteus B-P 26 undecaprenyl diphosphate synthase to give cis-homoGGOH exclusively.
为了开发具有生物活性的均烯丙基萜硫酸盐的合成方法,我们研究了几种前烯丙基链延长酶对 4-甲基-4-戊烯基二磷酸(homoIPP)的适用性和底物特异性。利用硬脂嗜热芽孢杆菌(全反式)-法呢嘧啶二磷酸合成酶使二甲基烯丙基二磷酸与同型 IPP 反应,可高效生成顺式(产率:45.9%)和反式-4,8-二甲基壬-3,7-二烯-1-醇(homoGOH,25.5%),其碳骨架为 4,8-二甲基壬-3-烯-1-硫酸酯,这是一种来自海洋生物的抗增殖化合物(Aiello, A. et al、Tetrahedron,53,11489-11492(1997 年))。在 Sulfolobus acidocaldariusgeranyl diphosphate synthase 中,发现 homoIPP 作为同源烯烃底物代替二磷酸异戊烯酯也具有活性,可产生顺式和反式-4,8,12-三甲基十三-3,7,11-三烯-1-醇的二磷酸酯、黄体小球菌 B-P 26 的己烯醇二磷酸合成酶可生成顺式和反式-4,8,12,16-四甲基十七碳-3,7,11,15-四烯-1-醇(均-GGOH),而黄体小球菌 B-P 26 的十一烯醇二磷酸合成酶只能生成顺式-均-GGOH。