All regioisomeric di- and tetrahydrogeranylgeraniols possessing the C2C3 double bond were prepared as authentic samples. The synthetic C20-isoprenoid alcohols were separated well by gas chromatography. Based on the chromatographic analysis, the enzymatic reduction pathway of a geranylgeranyl group was investigated to identify the last stage of (bacterio)chlorophyll biosynthesis in phototrophs. The
制备所有具有C 2 C 3双键的区域异构二-和四氢
香叶基香叶醇作为真实样品。通过气相色谱法很好地分离了合成的C 20-
异戊二烯醇。基于
色谱分析,研究了香叶基香叶基的酶促还原途径,以鉴定光养
生物中(细菌)叶绿素
生物合成的最后阶段。通过从C10 C11到C10H C11(S)H的第一次区域和立体有择加氢,从C6 C7到C6H C7(S)H的第二次和第三C14 C15到C14H的区域和立体有针对性的加氢,将香叶基香叶基三倍还原为植酸基。C15H。还原序列的鉴定完成了天然存在的叶绿素a和
细菌叶绿素a的
生物合成途径,所述叶绿素a和
细菌叶绿素a具有在17-
丙酸酯残基中的酯化部分的植酸基。