Methanol → HCID 88485499, compound

Participants

Reaction Steps

(1S,4R)-4-Amino-2-cyclopentene-1-methanol dibenzoyl-D-tartrate prepared as described in Example 13 (2.76 g, 9.02 mmol) was dissolved in water (20 mL) and applied to a column of 65 mL of Amberlite IA-400 (OH- form) anion exchange resin. The column was washed with water. Basic fractions were combined and evaporated to a residual oil which was dried by evaporation of absolute ethanol and then at 0.5 mm to give (1S,4R)-4-amino-2-cyclopentene-1-methanol (1.2 g) as a pale yellow oil (darkens rapidly in air) which was used immediately. This oil was dissolved in ethanol (5 mL) and added to a solution of N-(4,6-dichloro-5-formamido-2-pyrimidinyl)acetamide (2.07 g, 8.31 mmol), prepared as described in Example 15, and triethylamine (2.50 g, 24.8 mmol). The resulting dark solution was heated (oil bath 75°-80° C.) under nitrogen for 50 minutes. The solution was evaporated to a syrup which was applied to a silica gel column. Title compound was eluted with 3 to 5% methanol-chloroform as a pale yellow solid foam (1.59 g, 54%); 1H-NMR identical with that of crystallized sample. Such a sample was crystallized from ethanol to give white granules, m.p. 194°-195° C.; 1H-NMR (DMSO-d6) identical with that of the title compound of Example 15; [α]D20 +2.7°, [α]578 ° +3.6°, [α]54620 +2.9°, [α]43620 -2.5°, [α]36520 -41.2° (c=0.238, methanol).

Provenance & Evidence