Efficient synthesis of polyprenyl diphosphates from the corresponding
monophosphates by the diphenylpyrophosphate approach has been develope
d. The method was applied to various polyprenols with the alpha-termin
al isoprene (Z- or E-) or alpha-dihydroisoprene units. Moraprenyl diph
osphate was also synthesized by interaction of moraprenyl phosphoroimi
dazolidate with 2-cyanoethyl phosphate followed by elimination of cyan
oethyl group under basic conditions.