Sodium triacetoxyborohydride → tert-butyl (5S,12S)-12-[(R)-[(3R,4R,5R)-3,4-bis{[tert-butyl(dimethyl)silyl]oxy}-5-(3-(4-methoxybenzyl)-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl)tetrahydro-2-furanyl](hydroxy)methyl]-5-[(1S)-1-hydroxyethyl]-3,6-dioxo-1-phenyl-2-oxa-4,7,11-triazatridecan-13-oate

HRID 25716노트

반응식

HRID 25716 반응식
[CH2:1]([O:8][C:9](=[O:22])[NH:10][C@H:11]([C:15](=[O:21])[NH:16][CH2:17][CH2:18][CH:19]=O)[C@@H:12]([OH:14])[CH3:13])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[NH2:23][C@@H:24]([C@H:32]([C@@H:34]1[C@@H:38]([O:39][Si:40]([C:43]([CH3:46])([CH3:45])[CH3:44])([CH3:42])[CH3:41])[C@@H:37]([O:47][Si:48]([C:51]([CH3:54])([CH3:53])[CH3:52])([CH3:50])[CH3:49])[C@H:36]([N:55]2[CH:60]=[CH:59][C:58](=[O:61])[N:57]([CH2:62][C:63]3[CH:68]=[CH:67][C:66]([O:69][CH3:70])=[CH:65][CH:64]=3)[C:56]2=[O:71])[O:35]1)[OH:33])[C:25]([O:27][C:28]([CH3:31])([CH3:30])[CH3:29])=[O:26].C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>C(O)(=O)C.O1CCCC1>[Si:40]([O:39][C@H:38]1[C@@H:37]([O:47][Si:48]([C:51]([CH3:53])([CH3:54])[CH3:52])([CH3:49])[CH3:50])[C@H:36]([N:55]2[CH:60]=[CH:59][C:58](=[O:61])[N:57]([CH2:62][C:63]3[CH:68]=[CH:67][C:66]([O:69][CH3:70])=[CH:65][CH:64]=3)[C:56]2=[O:71])[O:35][CH:34]1[C@H:32]([OH:33])[C@@H:24]([C:25]([O:27][C:28]([CH3:31])([CH3:30])[CH3:29])=[O:26])[NH:23][CH2:19][CH2:18][CH2:17][NH:16][C:15](=[O:21])[C@H:11]([C@@H:12]([OH:14])[CH3:13])[NH:10][C:9](=[O:22])[O:8][CH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1)([C:43]([CH3:44])([CH3:45])[CH3:46])([CH3:42])[CH3:41]

참가 물질

6

반응물 3

HCID 5049666Sodium triacetoxyborohydrideHCID 12137063tert-butyl (2S,3R)-2-amino-3-[(2R,3R,4R,5R)-3,4-bis{[tert-butyl-(dimethyl)silyl]oxy}-5-(3-(4-methoxybenzyl)-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl)-tetrahydro-2-furanyl]-3-hydroxy-propanoateHCID 86587933[(1S,2S)-2-hydroxy-1-(3-oxo-propylcarbamoyl)-propyl]-carbamic acid benzyl ester

생성물 1

HCID 86587943tert-butyl (5S,12S)-12-[(R)-[(3R,4R,5R)-3,4-bis{[tert-butyl(dimethyl)silyl]oxy}-5-(3-(4-methoxybenzyl)-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl)tetrahydro-2-furanyl](hydroxy)methyl]-5-[(1S)-1-hydroxyethyl]-3,6-dioxo-1-phenyl-2-oxa-4,7,11-triazatridecan-13-oate수율 54%

시약·촉매·용매 2

HCID 176Acetic Acid촉매HCID 8028Tetrahydrofuran용매

실험 절차

By using an analogous procedure to that described for Example 1, a solution of [(1S,2S)-2-hydroxy-1-(3-oxo-propylcarbamoyl)-propyl]-carbamic acid benzyl ester (108 mg, 0.35 mmol, obtained from Reference Example 18), tert-butyl (2S,3R)-2-amino-3-[(2R,3R,4R,5R)-3,4-bis{[tert-butyl-(dimethyl)silyl]oxy}-5-(3-(4-methoxybenzyl)-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl)-tetrahydro-2-furanyl]-3-hydroxypropanoate (230 mg, 0.319 mmol, obtained from Reference Example 6), acetic acid (3 drops), and sodium triacetoxyborohydride (135 mg, 0.64 mmol) in anhydrous tetrahydrofuran (5 ml) was stirred under nitrogen at room temperature for 4 hours. The residue was chromatographed (flash column, silica gel, 5% methanol in methylene chloride) to provide tert-butyl (5S,12S)-12-[(R)-[(3R,4R,5R)-3,4-bis{[tert-butyl(dimethyl)silyl]oxy}-5-(3-(4-methoxybenzyl)-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl)tetrahydro-2-furanyl](hydroxy)methyl]-5-[(1S)-1-hydroxyethyl]-3,6-dioxo-1-phenyl-2-oxa-4,7,11-triazatridecan-13-oate (174 mg, 54%) as a pale yellow solid.

후처리

  1. customThe residue was chromatographed (flash column, silica gel, 5% methanol in methylene chloride)

출처 및 근거

ORD 기록
ord-e1cd6f11ccd7461691125466ffdc8329
출처 데이터셋
uspto-grants-2005_02
특허 번호
US06858591B2

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