反应详情

A method similar to that used for the preparation of (107a) was used except that methyl-L-triptophane hydrochloride (214 mg) was used instead of methyl-L-valinate hydrochloride to afford the desired product (365 mg). 1H NMR (300 MHz, CDCl3) δ 3.17 (m, 2H), 3.43 (s, 2H), 4.90 (m, 1H), 5.94 (d, 1H, J=7 Hz), 6.62 (m, 2H), 6.71 (m, 1H), 7.12 (m, 1H), 7.17 (m, 1H), 7.36 (d, 1H, J=8 Hz), 7.39 (d, 1H, J=8 Hz), 8.09 (s, 1H). MS APCI, m/z=373(M+1). LC/MS: 2.28 min.