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(S)-2-tert-Butoxycarbonylamino-3-{(S)-2-[4-(3,4-dichloro-benzyloxy)-phenyl]-2,3-dihydro-benzo[1,4]dioxin-6-yl}-propionic acid methyl ester → (S)-2-tert-Butoxycarbonylamino-3-[(S)-2-(4-hydroxy-phenyl)-2,3-dihydro-benzo[1,4]dioxin-6-yl]-propionic acid methyl ester

HRID 391793
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HRID 391793 반응식
[CH3:1][O:2][C:3](=[O:40])[C@@H:4]([NH:32][C:33]([O:35][C:36]([CH3:39])([CH3:38])[CH3:37])=[O:34])[CH2:5][C:6]1[CH:31]=[CH:30][C:9]2[O:10][C@@H:11]([C:14]3[CH:19]=[CH:18][C:17]([O:20]CC4C=CC(Cl)=C(Cl)C=4)=[CH:16][CH:15]=3)[CH2:12][O:13][C:8]=2[CH:7]=1>CO.C(OCC)(=O)C.[Pd]>[CH3:1][O:2][C:3](=[O:40])[C@@H:4]([NH:32][C:33]([O:35][C:36]([CH3:38])([CH3:37])[CH3:39])=[O:34])[CH2:5][C:6]1[CH:31]=[CH:30][C:9]2[O:10][C@@H:11]([C:14]3[CH:19]=[CH:18][C:17]([OH:20])=[CH:16][CH:15]=3)[CH2:12][O:13][C:8]=2[CH:7]=1
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참가 물질

5

반응물 1

HCID 58327295(S)-2-tert-Butoxycarbonylamino-3-{(S)-2-[4-(3,4-dichloro-benzyloxy)-phenyl]-2,3-dihydro-benzo[1,4]dioxin-6-yl}-propionic acid methyl ester

생성물 1

HCID 58327426(S)-2-tert-Butoxycarbonylamino-3-[(S)-2-(4-hydroxy-phenyl)-2,3-dihydro-benzo[1,4]dioxin-6-yl]-propionic acid methyl ester수율 106.1%

시약·촉매·용매 3

HCID 23938Palladium촉매HCID 887Methanol용매
HCID 8857
Ethyl Acetate
용매

실험 절차

(S)-2-tert-Butoxycarbonylamino-3-{(S)-2-[4-(3,4-dichloro-benzyloxy)-phenyl]-2,3-dihydro-benzo[1,4]dioxin-6-yl}-propionic acid methyl ester (310 mg), was subjected to hydrogenation using 10% Pd on carbon (150 mg) in methanol (20 mL), ethyl acetate (10 mL) and TEA (1 mL) as described in General Procedure Q furnished (S)-2-tert-butoxycarbonylamino-3-[(S)-2-(4-hydroxy-phenyl)-2,3-dihydro-benzo[1,4]dioxin-6-yl]-propionic acid methyl ester (240 mg). LCMS (m/z): 431.

출처 및 근거

ORD 기록
ord-98b88ae7fcc34d3a87ac3c3e65ec61b1
출처 데이터셋
uspto-grants-2013_02
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08383644B2

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