Novel polyprenyl compounds, method of producing the same and their use in dolichol production
申请人:KURARAY CO., LTD.
公开号:EP0087136A2
公开(公告)日:1983-08-31
There are provided polyprenyl compounds of the formula
wherein
represent a trans-isoprene unit and a cis-isoprene unit, respectively, n is an integer of 11-19, Z1 and Z2 together represent =0, =CH-COOH, =CH-COOR1, =CH-CN, =C(CN)COOR2, =CH-CO-NH2, =CH-CO-N(R3) (R4), =CH-CO-NHR5, =CH-CH2-N(R3) (R4), =CH-CH2-NHR5 or -CH-CHO or Z1 is a hydrogen atom and Z2 is -CH2COOH, -CH2COOR6, -CH(CN)COOR2, -CH2CN, -CH2-CO-NH2, -CH=CH-N(R3) (R4) or -CH2-CH=N-R6, R1, R2 and R6 each being a lower alkyl group, R3 and R4 each independently being a lower-alkyl, cycloalkyl, aryl or aralkyl group or R3 and R4 together representing an alkylene group containing 2-5 carbon atoms, and R5 being a lower-alkyl, cycloalkyl, aryl or aralkyl group. These polyprenyl compounds can be synthesized starting with a polyprenol obtainable from leaves of a plant such as Ginkgo biloba or Cedrus deodara by extraction and if necessary followed by hydrolysis or a reactive derivative thereof. The polyprenyl compounds are useful as intermediates for the synthesis of dolichols without the use of an expensive C5 chain extender.
提供了如下式子的聚丙烯化合物
其中
分别代表反式异戊二烯单元和顺式异戊二烯单元,n 是 11-19 的整数,Z1 和 Z2 一起代表=0、=CH-COOH、=CH-COOR1、=CH-CN、=C(CN)COOR2、=CH-CO-NH2、=CH-CO-N(R3) (R4)、=CH-CO-NHR5、=CH-CH2-N(R3) (R4)、=CH-CH2-NHR5 或 -CH-CHO 或 Z1 是氢原子,Z2 是 -CH2COOH、-CH2COOR6、-CH(CN)COOR2、-CH2CN、-CH2-CO-NH2、-CH=CH-N(R3) (R4) 或 -CH2-CH=N-R6,其中 R1、R2 和 R6 各自为低级烷基,R3 和 R4 各自独立地为低级烷基、环烷基、芳基或芳烷基,或 R3 和 R4 共同代表含有 2-5 个碳原子的亚烷基,R5 为低级烷基、环烷基、芳基或芳烷基。这些聚芘化合物可以从银杏叶或雪松叶等植物叶片中提取的聚芘醇开始合成,必要时还可以通过水解或其反应衍生物合成。这种聚戊烯醇化合物可作为合成多羟基化合物的中间体,而无需使用昂贵的 C5 扩链剂。