HRID2214271

反应详情

EQUATION

反应方程式

HRID 2214271 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

To H-Asp (OtBu)-OtBu hydrochloride salt (28 mg, 0.10 mmol) in dry DMF (2 mL) was sequentially added at room temperature 2-(3-tritylsulfanyl-propyl)-succinic acid 4-tert-butyl ester (50 mg, 0.10 mmol), HOBt (14 mg, 0.10 mmol), PYBOP (56 mg, 0.11 mmol) and DIPEA (37 μL, 0.20 mmol). The usual aqueous work up yielded the title compound (62 mg, 86%) as a colorless residue: 1H NMR (CDCl3, 400 MHz) δ 7.41–7.38 (m, 6H), 7.29–7.25 (m, 6H), 6.60–6.57 (m, 1H), 4.68–4.56 (m, 1H), 3.18–3.14 (m, 2H), 2.89–2.80 (m, 1H), 2.74–2.52 (m, 2H), 2.43–2.36 (m, 1H), 2.32–2.19 (m, 1H), 2.12–2.07 (m, 2H), 1.83–1.80 (m, 2H), 1.60–1.53 (m, 1H), 1.45–1.40 (m, 27H); 13C (DEPT) (CDCl3, 100 MHz) δ 129.4, 127.7, 126.4, 49.0, 48.7, 46.1, 42.5, 37.8, 37.6, 37.2, 31.6, 31.5, 29.6, 27.9, 27.8, 27.7, 26.3, 26.2, 26.0.