tert-butyl N-[(2S,3R)-4-chloro-3-hydroxy-1-phenylbutan-2-yl]carbamate

Conditions: temp:30.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Glucose 6 g, NADP 1.4 mg, toluene 0.25 ml, and (3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanone 2.5 g were added to 50 ml of a cultured medium of E. coli HB101 (pNTOM5G1) prepared in the same manner as in Example 7, and the mixture was stirred at 30° C. while adjusting to pH 6.5 by dropwise addition of 5 M sodium hydroxide. One hour after the start of the reaction, 2.5 g of (3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanone was added, and the mixture was reacted for 20 hr. After completion of the reaction, the reaction mixture was extracted with toluene, desolvated and the extract was analyzed in the same manner as in Example 8. As a result, (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol (yield 99.6%, diastereomeric excess 99.8% d.e.) was obtained. (pNTOM5G1) prepared in the same manner as in Example 7 was added the mixture was reacted for 20 hr After completion of the reaction the reaction mixture was extracted with toluene

Conditions: temp:30.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Glucose 3 g, NADP 3 mg, toluene 0.25 ml, and (3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanone 2.5 g were added to 25 ml of a cultured medium of E. coli HB101 (pNTOM4G1) prepared in the same manner as in Example 7, and the mixture was stirred at 30° C. for 40 hr while adjusting to pH 6.5 by dropwise addition of 5 M sodium hydroxide. After completion of the reaction, the reaction mixture was extracted with toluene, desolvated and the extract was analyzed in the same manner as in Example 8. As a result, (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol (yield 99.1%, diastereomeric excess 99.8% d.e.) was obtained. (pNTOM4G1) prepared in the same manner as in Example 7 After completion of the reaction the reaction mixture was extracted with toluene

Conditions: temp:30.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Glucose 3 g, NADP 3 mg, toluene 0.25 ml, and (3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanone 2.5 g were added to 25 ml of a cultured medium of E. coli HB101 (pNTOM4G1) prepared in the same manner as in Example 7, and the mixture was stirred at 30° C. for 40 hr while adjusting to pH 6.5 by dropwise addition of 5 M sodium hydroxide. After completion of the reaction, the reaction mixture was extracted with toluene, desolvated and the extract was analyzed in the same manner as in Example 8. As a result, (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol (yield 99.1%, diastereomeric excess 99.8% d.e.) was obtained. (pNTOM4G1) prepared in the same manner as in Example 7 After completion of the reaction the reaction mixture was extracted with toluene

Conditions: temp:30.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Glucose dehydrogenase (manufactured by Amano Enzyme) 1250 U, glucose 3 g, NADP 4 mg, (3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanone 0.25 g were added to 22.5 ml of a cell-free extract of E. coli HB101 (pNTOM4) prepared in Example 7, and the mixture was is stirred at 30° C. while adjusting to pH 6.5 by dropwise addition of 5 M sodium hydroxide. (3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanone (0.25 g) was added at 2 hr, 4 hr and 6 hr from the start of the reaction and 1.25 g thereof was added at 8 hr from the start of the reaction, and the mixture was reacted for 31 hr. After completion of the reaction, the reaction mixture was extracted with toluene, desolvated and the extract was analyzed in the same manner as in Example 8. As a result, (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol (yield 99.0%, diastereomeric excess 99.8% d.e.) was obtained. a cell-free extract of E (pNTOM4) prepared in Example 7 thereof was added at 8 hr from the start of the reaction the mixture was reacted for 31 hr After completion of the reaction the reaction mixture was extracted with toluene

Conditions: temp:30.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Glucose dehydrogenase (manufactured by Amano Enzyme) 2000 U, glucose 2 g, NADP 6 mg, (3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanone 2.5 g were added to 50 ml of a cell-free extract of E. coli HB101 (pNTOM3) prepared in Example 7, and the mixture was stirred at 30° C. for 22 hr while adjusting to pH 6.5 by dropwise addition of 5 M sodium hydroxide. After completion of the reaction, the reaction mixture was extracted with toluene, desolvated and the extract was analyzed. As a result, (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol (yield 86.3%, diastereomeric excess 96.4% d.e.) was obtained. a cell-free extract of E (pNTOM3) prepared in Example 7 After completion of the reaction the reaction mixture was extracted with toluene

Conditions: temp:30.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Glucose dehydrogenase (manufactured by Amano Enzyme) 2000 U, glucose 2 g, NADP 6 mg, (3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanone 2.5 g were added to 50 ml of a cell-free extract of E. coli HB101 (pNTOM3) prepared in Example 7, and the mixture was stirred at 30° C. for 22 hr while adjusting to pH 6.5 by dropwise addition of 5 M sodium hydroxide. After completion of the reaction, the reaction mixture was extracted with toluene, desolvated and the extract was analyzed. As a result, (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol (yield 86.3%, diastereomeric excess 96.4% d.e.) was obtained. a cell-free extract of E (pNTOM3) prepared in Example 7 After completion of the reaction the reaction mixture was extracted with toluene

Conditions: temp:30.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Glucose 6 g, NADP 1.4 mg, toluene 0.25 ml, and (3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanone 2.5 g were added to 50 ml of a cultured medium of E. coli HB101 (pNTOM5G1) prepared in the same manner as in Example 7, and the mixture was stirred at 30° C. while adjusting to pH 6.5 by dropwise addition of 5 M sodium hydroxide. One hour after the start of the reaction, 2.5 g of (3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanone was added, and the mixture was reacted for 20 hr. After completion of the reaction, the reaction mixture was extracted with toluene, desolvated and the extract was analyzed in the same manner as in Example 8. As a result, (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol (yield 99.6%, diastereomeric excess 99.8% d.e.) was obtained. (pNTOM5G1) prepared in the same manner as in Example 7 was added the mixture was reacted for 20 hr After completion of the reaction the reaction mixture was extracted with toluene

Conditions: temp:30.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Glucose 3 g, NADP 3 mg, toluene 0.25 ml, and (3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanone 2.5 g were added to 25 ml of a cultured medium of E. coli HB101 (pNTOM4G1) prepared in the same manner as in Example 7, and the mixture was stirred at 30° C. for 40 hr while adjusting to pH 6.5 by dropwise addition of 5 M sodium hydroxide. After completion of the reaction, the reaction mixture was extracted with toluene, desolvated and the extract was analyzed in the same manner as in Example 8. As a result, (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol (yield 99.1%, diastereomeric excess 99.8% d.e.) was obtained. (pNTOM4G1) prepared in the same manner as in Example 7 After completion of the reaction the reaction mixture was extracted with toluene

Conditions: temp:30.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Glucose dehydrogenase (manufactured by Amano Enzyme) 1250 U, glucose 3 g, NADP 4 mg, (3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanone 0.25 g were added to 22.5 ml of a cell-free extract of E. coli HB101 (pNTOM4) prepared in Example 7, and the mixture was is stirred at 30° C. while adjusting to pH 6.5 by dropwise addition of 5 M sodium hydroxide. (3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanone (0.25 g) was added at 2 hr, 4 hr and 6 hr from the start of the reaction and 1.25 g thereof was added at 8 hr from the start of the reaction, and the mixture was reacted for 31 hr. After completion of the reaction, the reaction mixture was extracted with toluene, desolvated and the extract was analyzed in the same manner as in Example 8. As a result, (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol (yield 99.0%, diastereomeric excess 99.8% d.e.) was obtained. a cell-free extract of E (pNTOM4) prepared in Example 7 thereof was added at 8 hr from the start of the reaction the mixture was reacted for 31 hr After completion of the reaction the reaction mixture was extracted with toluene

Conditions: temp:30.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Glucose dehydrogenase (manufactured by Amano Enzyme) 2000 U, glucose 2 g, NADP 6 mg, (3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanone 2.5 g were added to 50 ml of a cell-free extract of E. coli HB101 (pNTOM3) prepared in Example 7, and the mixture was stirred at 30° C. for 22 hr while adjusting to pH 6.5 by dropwise addition of 5 M sodium hydroxide. After completion of the reaction, the reaction mixture was extracted with toluene, desolvated and the extract was analyzed. As a result, (2R,3S)-1-chloro-3-tert-butoxycarbonylamino-4-phenyl-2-butanol (yield 86.3%, diastereomeric excess 96.4% d.e.) was obtained. a cell-free extract of E (pNTOM3) prepared in Example 7 After completion of the reaction the reaction mixture was extracted with toluene

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (3S)-3-tert-Butoxycarbonylamino-1-chloro-4-phenyl-2-butanone (1.49 g, 5.0 mmol), 90% formic acid (0.224 ml, 5.25 mmol), and triethylamine (0.730 ml, 5.25 mmol) were added to a solution of chloro(pentamethylcyclopentadienyl)rhodium (III) (1R,2R)-N-(p-toluenesulfonyl-1,2-diphenylethylenediamine (3.4 mg, 0.005 mmol, s/c=1000) in ethyl acetate (7.0 ml), followed by stirring at room temperature for 2 hours. After completion of the reaction, the reaction mixture was quantitatively analyzed by HPLC to confirm production of a desired compound, (2R, 3S)-3-tert-butoxycarbonylamino-1-chloro-2-hydroxy-4phenylbutane (1.50 g; yield: 99.9%). The production ratio of the desired (2R,3S)-form to the isomeric (2S,3S)-form, (2R,3S):(2S,3S), was found to be 9.0:1. After completion of the reaction

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2-Propanol (12.9 ml) and aqueous 6.08 mol/l sodium hydroxide solution (2.94 g) were added to a solution containing (2R, 3S)-3-tert-butoxycarbonylamino-1-chloro-2-hydroxy-4-phenylbutane obtained in Example 17 {(2R, 3S) content of 2.79 g; (2S, 3S) content of 83.9 mg}, for agitation at 4° C. for 15 hours. The resulting solution was analyzed by HPLC, which indicates that the objective (2R, 3S) compound was at 94.0% (HPLC area ratio). After the reaction was quenched by the addition of aqueous 4.4% citric acid solution (20.9 g), the reaction solution was cooled from 25° C. to −10° C. over 2.3 hours; then, the seed crystal was added, followed by addition of water (19.2 ml) for overnight agitation, to crystallize (2R, 3S)-3-tert-butoxycarbonylamino-1,2-epoxy-4-phenylbutane. By filtration of the resulting slurry, the crystal of the objective (2R, 3S)-3-tert-butoxycarbonylamino-1,2-epoxy-4-phenylbutane was obtained {(2R, 3S) yield: 2.4 g (96.2%)}. The dried crystal was then analyzed by HPLC. (2R, 3S): (2S, 3S)=97.9:2.1. Additionally, the purity of (2R, 3S) was at 95.4% (HPLC area ratio). After the reaction was quenched by the addition of aqueous 4.4% citric acid solution (20.9 g) the reaction solution was cooled from 25° C. to −10° C. over 2.3 hours then, the seed crystal was added followed by addition of water (19.2 ml) for overnight agitation to crystallize (2R, 3S)-3-tert-butoxycarbonylamino-1,2-epoxy-4-phenylbutane By filtration of the resulting slurry