3',4'-Dimethoxycinnamic acid → 1H-Purin-6-one, 1,2,3,7-tetrahydro-8-(2-(3,4-dimethoxyphenyl)ethenyl)- 1,3-dipropyl-2-thioxo-,(E)-

Participants

Reaction Steps

Substantially the same procedure as in Reference Example 1 was repeated using 4.00 g (16.5 mmol) of 5,6-diamino-1,3-dipropyl-2-thiouracil and 3.79 g (18.2 mmol) of 3,4-dimethoxycinnamic acid. Then, the resultant crude crystals were recrystallized from dioxane/water to give 3.16 g (yield 46%) of Compound 71 as yellow needles.

Provenance & Evidence