Reaktion #53997

ord-c0d9738ce0a04465b864c65c9fb5b2d2

Reaktionsgleichung

COc1ccc(Cn2c(=O)ccn([C@@H]3OC([C@H](O)[C@H](NCCCNC(=O)[C@H](Cc4ccccc4)NC(=O)OCc4ccccc4)C(=O)OC(C)(C)C)[C@@H](O[Si](C)(C)C(C)(C)C)[C@H]3O[Si](C)(C)C(C)(C)C)c2=O)cc1
tert-butyl (5S,12S)-5-benzyl-12-[(R)-[(3R,4R,5R)-3,4-bis{[tertbutyl(dimethyl)silyl]oxy}-5-(3-(4-methoxybenzyl)-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl)tetrahydro-2-furanyl](hydroxy)methyl]-3,6-dioxo-1-phenyl-2-oxa-4,7,11-triazatridecan-13-oate
→
COc1ccc(Cn2c(=O)ccn([C@@H]3OC([C@H](O)[C@H](NCCCNC(=O)[C@@H](N)Cc4ccccc4)C(=O)OC(C)(C)C)[C@@H](O[Si](C)(C)C(C)(C)C)[C@H]3O[Si](C)(C)C(C)(C)C)c2=O)cc1
tert-butyl (2S,3R)-2-[(3-{[(2S)-2-amino-3-phenylpropanoyl]amino}propyl)amino]-3-[(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
Ausbeute 70.4%

Edukte

COc1ccc(Cn2c(=O)ccn([C@@H]3OC([C@H](O)[C@H](NCCCNC(=O)[C@H](Cc4ccccc4)NC(=O)OCc4ccccc4)C(=O)OC(C)(C)C)[C@@H](O[Si](C)(C)C(C)(C)C)[C@H]3O[Si](C)(C)C(C)(C)C)c2=O)cc1
tert-butyl (5S,12S)-5-benzyl-12-[(R)-[(3R,4R,5R)-3,4-bis{[tertbutyl(dimethyl)silyl]oxy}-5-(3-(4-methoxybenzyl)-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl)tetrahydro-2-furanyl](hydroxy)methyl]-3,6-dioxo-1-phenyl-2-oxa-4,7,11-triazatridecan-13-oate

Reagenzien

[Pd]
palladium on carbon

Lösungsmittel

CO
methanol

Reaktionsbedingungen

Detaillierte Bedingungen
See reaction.notes.procedure_details.

Vorschrift

By using an analogous procedure to that described for Example 2, tert-butyl (5S,12S)-5-benzyl-12-[(R)-[(3R,4R,5R)-3,4-bis{[tertbutyl(dimethyl)silyl]oxy}-5-(3-(4-methoxybenzyl)-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl)tetrahydro-2-furanyl](hydroxy)methyl]-3,6-dioxo-1-phenyl-2-oxa-4,7,11-triazatridecan-13-oate (Example 12) (49 mg, 0.046 mmol) was hydrogenated in methanol (1.5 ml) using 10% palladium on carbon (12 mg) to provide tert-butyl (2S,3R)-2-[(3-{[(2S)-2-amino-3-phenylpropanoyl]amino}propyl)amino]-3-[(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 (30 mg, 70%) as a white amorphous solid.

Quelle

DOI: 10.6084/m9.figshare.5104873.v1Patent: US06858591B2uspto-grants-2005_02