申请人:Clapés Saborit Pere
公开号:US20100009417A1
公开(公告)日:2010-01-14
The present invention discloses a chemoenzymatic process for the preparation of an iminocyclitol corresponding to formula (I), (II), (III) or (IV), wherein: R
1
and R
2
are the same or different, and independently selected from the group consisting of: H, OH, hydroxymethyl, methyl, ethyl, butyl, pentyl, hexyl, octyl, isopropyl, isobutyl, 2-methylbutyl, and benzyl; R
3
is selected from the group consisting of: H, hydroxymethyl, hydroxyethyl, ethyl, butyl, pentyl, hexyl, octyl, dodecyl, isobutyl, isopropyl, isopentyl, 2-methylbutyl, benzyl, and phenylethyl; n: 0 or 1; the process comprising: (i) an aldol addition catalyzed by a
D
-fructose-6-phosphate aldolase enzyme (FSA) and an acceptor aminoaldehyde; and (ii) an intramolecular reductive amination of the addition adduct obtained in step (i) with H
2
, in the presence of a metallic catalyst, optionally being carried out said step (ii) in the presence of an aldehyde of formula R
3
—CHO, wherein R
3
is as defined above.