Hydrochloric Acid → MK-5172

HRID 659831Notes

Reaction equation

[C:1]([C@H:5]1[C:33](=[O:34])[N:32]2[CH2:35][C@@H:29]([CH2:30][C@H:31]2[C:36]([O:38]C)=[O:37])[O:28][C:17]2=[N:18][C:19]3[CH:20]=[C:21]([O:26][CH3:27])[CH:22]=[CH:23][C:24]=3[N:25]=[C:16]2[CH2:15][CH2:14][CH2:13][CH2:12][CH2:11][C@@H:10]2[CH2:40][C@H:9]2[O:8][C:7](=[O:41])[NH:6]1)([CH3:4])([CH3:3])[CH3:2].O.C1COCC1.O[Li].O.Cl>CCOC(C)=O>[C:1]([C@H:5]1[C:33](=[O:34])[N:32]2[CH2:35][C@@H:29]([CH2:30][C@H:31]2[C:36]([OH:38])=[O:37])[O:28][C:17]2=[N:18][C:19]3[CH:20]=[C:21]([O:26][CH3:27])[CH:22]=[CH:23][C:24]=3[N:25]=[C:16]2[CH2:15][CH2:14][CH2:13][CH2:12][CH2:11][C@@H:10]2[CH2:40][C@H:9]2[O:8][C:7](=[O:41])[NH:6]1)([CH3:4])([CH3:2])[CH3:3]

Participants

Conditions

Temperature: 20 °C

Procedure

A solution (0.1 M) of methyl (1aR,5S,8S,10R,22aR)-5-tert-butyl-14-methoxy-3,6-dioxo-1,1a,3,4,5,6,9,10,18,19,20,21,22,22a-tetradecahydro-8H-7,10-methanocyclopropa[18,19][1,10,3,6]dioxadiazacyclononadecino[11,12-b]quinoxaline-8-carboxylate in a 1:1 mixture of H2O/THF was treated with LiOH.H2O (3 eq). The resulting mixture was stirred at 20° C. for 18 h, acidified with aqueous HCl (0.2 M) and diluted with EtOAc. The organic phase was separated, washed with aqueous HCl (0.2 M) and brine then dried. Removal of the volatiles afforded the title compound (98%) as a solid. MS (ES+) m/z 555 (M+H)+

Workup

customThe organic phase was separated
washwashed with aqueous HCl (0.2 M) and brine
customthen dried
customRemoval of the volatiles

Sources & evidence

ORD record: ord-e8fb0bceef4742de95d4434d9611bdb2
Source dataset: uspto-grants-2011_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08080654B2

Reaction notes

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