Acetic Acid → Methyl 5-(5-(tert-butoxycarbonylamino)-N-methylpentylsulfonamido)-8-hydroxy-1,6-naphthyridine-7-carboxylate

HRID 455308Notes

Reaction equation

[C:1]([O:5][C:6]([NH:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][S:14]([N:17]([C:19]1[N:28]=[C:27]([C:29]([O:31][CH3:32])=[O:30])[C:26]([O:33]S(C2C=CC(C)=CC=2)(=O)=O)=[C:25]2[C:20]=1[CH:21]=[CH:22][CH:23]=[N:24]2)[CH3:18])(=[O:16])=[O:15])=[O:7])([CH3:4])([CH3:3])[CH3:2].C[O-].[Na+].CO.C(O)(=O)C>CN(C=O)C.O>[C:1]([O:5][C:6]([NH:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][S:14]([N:17]([C:19]1[N:28]=[C:27]([C:29]([O:31][CH3:32])=[O:30])[C:26]([OH:33])=[C:25]2[C:20]=1[CH:21]=[CH:22][CH:23]=[N:24]2)[CH3:18])(=[O:16])=[O:15])=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

Conditions

Temperature: 50 °C

Procedure

Methyl 5-(5-(tert-butoxycarbonylamino)-N-methylpentylsulfonamido)-8-(tosyloxy)-1,6-naphthyridine-7-carboxylate (Example 2.1; 8.68 mmol) was dissolved in DMF (17 ml) at 40° C. and transferred to a 33% solution of NaOMe in MeOH (4.1 ml; 21.7 mmol) over 1-2 min at 25° C. The resulting yellow homogenous mixture was heated to 50° C. Mixture was cooled to 25° C. over 15 min and aged at 25° C. for 15 min. Acetic acid (1 ml) was added over 1 min, then water was added. The slurry was aged for 30 min and filtered. The filter cake was washed with water, and dried to give the target compound in 61% yield.

Workup

temperatureMixture was cooled to 25° C. over 15 min
waitThe slurry was aged for 30 min
filtrationfiltered
washThe filter cake was washed with water
customdried
customto give the target compound in 61% yield

Sources & evidence

ORD record: ord-b47920a914b14048869584783a2b898b
Source dataset: uspto-grants-2013_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08497270B2

Reaction notes

Loading…