Reference of 13362-28-2, In the chemical reaction process,reaction time,type of solvent,can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product.An updated downstream synthesis route of 13362-28-2 as follows.
The starting material was prepared as follows: (2S,4S)-1-(4-Nitrobenzyloxycarbonyl)-4-acetylthiocarboxypyrrolidine (1.5 g, 4 mmol) was treated at ambient temperature, for 5 hours, with thionyl chloride (12 ml) and a catalytic amount of DMF (15 mg). The solvent was evaporated, the residue taken up in CH2 Cl2, evaporated, dried under reduced pressure for 1 hour and solubilized in CH2 Cl2 (10 ml). This solution was added to a cold (0 C.) solution of 2-amino-4-carboxypyridine (560 mg, 4 mmol) diisopropylethylamine (2.12 ml, 12 mmol) and trimethylsilylchloride (1 ml, 12 mmol) in dry CH2 Cl2. After 12 hours at ambient temperature, the solvent was evaporated, the residue purified by subjecting to chromatography on HP20SS resin, (eluant: CH3 CN/H2 O) to give (2S,4S)-1-(4-nitrobenzyloxycarbonyl)-2-(4-carboxy-2-pyridylcarbamoyl)pyrrolidin-4-ylthioacetate (650 mg, 32.5%). NMR: delta1.9 (m, 1H); 2.32 (s, 3H); 2.83 (m, 1H); 3.36 (m, 1H); 4.0 (m, 2H); 4.64 (s, 1H); 4.9-5.35 (m, 2H); 7.4-7.7 (m, 3H); 7.92 (s, 1H); 8.2 (s, 1H); 8.47 (m, 2H).
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,13362-28-2, its application will become more common.
Reference:
Patent; Zeneca Limited; US5444057; (1995); A;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem