Hydrochloric Acid → HCID 136387747, compound

Participants

Reaction Steps

To a solution of methyl (3R,5S,8S)-22-ethyl-8-isopropyl-7-oxo-2,27-dioxa-6,9,11,12,24-pentaazapentacyclo[16.6.2.13,6.110,13.021,25]octacosa-1(24),10,12,18,20,22,25-heptaene-5-carboxylate (from Step 2) in THF/H2O (1/1 v/v) was added LiOH (4 eq). The resulting reaction mixture was stirred at RT for 2 h and then treated with 1N aq. HCl until pH=2 was reached. The aqueous phase was extracted with EtOAc, the organic layer was separated, dried over Na2SO4, filtered and concentrated to give a white solid. MS (ES+) C27H33N5O5 requires: 507. Found: 508 (M+H+).

Provenance & Evidence