A process for the preparation of compounds of formula (1), by enzymatic acylation to form compounds of formulae (3a) and (3a) and then reacting the compound of formula (3a) with a compound introducing the radical of formula —CH
2
—COOR
8
, R
8
being an organic radical, and then reducing, and optionally hydrolysing, the resulting compound of formula (4).
一种制备化合物(1)的过程,通过酶促酰化形成化合物(3a)和(3a)的化合物,然后将化合物(3a)与引入公式-
CH2-COOR8的基团的化合物反应,其中R8是有机基团,然后还原,可选地
水解得到公式(4)的产物。