Reaktion #11057

Reaktionsgleichung

intermediate 1k

(6S)-[(4-{[(3-benzylamino-4-oxo-4,6,7,8-tetrahydro-pyrrolo[1,2-a]pyrimidine-6-carbonyl)-amino]-methyl}-phenyl)-imino-methyl]-carbamic acid tert-butyl ester

intermediate 1j

(S)-[(4-{[(3-amino-4-oxo-4,6,7,8-tetrahydro-pyrrolo[1,2-a]pyrimidine-6-carbonyl)-amino]-methyl}-phenyl)-imino-methyl]-carbamic acid tert-butyl ester

cyclopentanone

NaBH(OAc)3

→

intermediate 6a

Ausbeute 57.3%

(S)-[(4-{[(3-cyclopentylamino-4-oxo-4,6,7,8-tetrahydro-pyrrolo[1,2-a]pyrimidine-6-carbonyl)-amino]-methyl}-phenyl)-imino-methyl]-carbamic acid tert-butyl ester

Ausbeute 57.3%

Reaktionsbedingungen

Vorschrift

Following a procedure similar to that for the preparation of intermediate 1k, intermediate 1j (115.2 mg, 0.27 mmol), cyclopentanone (68.1 mg, 0.81 mmol) and NaBH(OAc)3 (217.5 mg, 1.03 mmol) yielded 76.5 mg (57.3%) of intermediate 6a. MS (ESI) 496.1 (M+H+).

Quelle