With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.151838-62-9,2-(tert-Butoxycarbonyl)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid,as a common compound, the synthetic route is as follows.,151838-62-9
Example 1 L – (1, 2,3, 4-Tetrahydroisoquinolin-3-ylmethyl)-2, 3-dihydrospiro [indene-1, 4′- piperidine] (A) TERT-BUTYL3- (2, 3-DIHYDRO-1 H-SPIRO [INDENE-1, 4 -PIPERIDIN]-1 -YLCARBONYL)- 3, 4-dihydroisoquinoline-2 (1H)-CARBOXYLATE To a stirred solution of 2- (TERT-BUTOXYCARBONYL)-1, 2,3, 4-tetrahydroisoquinoline-3- carboxylic acid (610.1 mg, 2.2 mmol, this was prepared according to the reported method by S. E. Gibson et al, Bioorg. Med. CHEMLETT., 1997,7, 1289), 2,3- dihydrospiro [LH-INDENE-1, 4′-piperidine] hydrochloride (492.2 mg, 2.2 mmol), triethylamine (0.307 mL, 2.2 mmol), and hydroxybenzotriazole (327 mg, 2.42 mmol) in DMF (15 mL) and THF (10 mL) was added WSC (463.9 mg, 2.42 mmol) at- 20 C. After 2 days stirring at room temperature, the reaction mixture was poured into aqueous NAHCO3 solution (200 mL) and extracted with ether (100 mL x 2). The extracts combined were washed with water (70 mL), dried (MGS04), filtered, and concentrated. The crude product was purified by silica gel column chromatography (n-hexane/ethyl acetate: 2/1) to give 785.8 mg (80 %) of title compound as white solid. 1H NMR (300 MHz, CDC13) 8 7.25-7. 04 (8H, m), 5.47-5. 27 and 5. 08- 4. 73 (total 2H, each m), 4.65-4. 35 and 4.10-3. 90 (total 3H, each m), 3.40-2. 70 (6H, m), 2.18-2. 02 (2H, m), 2.00-1. 40 (13H, m, including 9H, s at 1.49 ppm).
151838-62-9 2-(tert-Butoxycarbonyl)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid 2735649, atetrahydroisoquinoline compound, is more and more widely used in various fields.
Reference£º
Patent; PFIZER JAPAN, INC.; PFIZER, Inc.; WO2005/16913; (2005); A1;,
Tetrahydroisoquinoline – Wikipedia
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem