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Industrial Biotransformations

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Dehydrogenase<br />

Candida sorbophila<br />

N<br />

O<br />

1. NH2OH HCl<br />

2. TsCl, pyridine<br />

N<br />

EtO OEt HN<br />

O<br />

N<br />

N OTs<br />

N<br />

1. EtOK, EtOH<br />

2. HCl, MTBE<br />

1 2 3<br />

EDC, THF, H 2O, pH 5.5,<br />

p-nitrophenyl acetic acid<br />

E<br />

dehydrogenase<br />

1. BH3 SMe2<br />

2. MsCl, Et 3N<br />

MTBE; NaN 3<br />

DMSO<br />

O<br />

N N<br />

H2, Pd/C,<br />

MeOH, NH4OH<br />

COOH<br />

R<br />

R = OH<br />

R = N 3<br />

SO2Cl<br />

N<br />

O<br />

N N<br />

N N N<br />

NO 2<br />

H 2N<br />

OCN<br />

OH<br />

aq. HCl<br />

4 5<br />

7 9<br />

H<br />

N<br />

8 10<br />

+<br />

11<br />

octane<br />

125 C, 2 d<br />

84 %<br />

N<br />

OH<br />

SO2Cl<br />

H<br />

N<br />

11 6<br />

O<br />

(R)-6<br />

O<br />

SO3H<br />

SO2Cl<br />

N<br />

N<br />

COCl2, DMF<br />

o-dichlorobenzene<br />

165 C<br />

70 %<br />

EtO OEt<br />

NH2<br />

O<br />

NH 2<br />

NH 2<br />

H<br />

N<br />

O<br />

∗2HCl<br />

EtOAc,<br />

aq. NaHCO3<br />

EC 1.1.X.X<br />

NO2<br />

193

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