K. Takaba et al., ASYMMETRIC-SYNTHESIS OF -6,7-METHYLENEDIOXY-1,2,3,4-TETRAHYDROISOQUINOLINE (SO-CALLED FUMARIZINE), Heterocycles, 43(8), 1996, pp. 1777-1786
l)-2-methyl-6,7-methylenedioxy-1,2,3,4-tetrahydro- isoquinoline (so-ca
lled ''fumarizine'') (1)was synthesized via the stereoselective reduct
ion of the corresponding chiral iminium. ion (11), which was obtained
by the Bischler-Napieralski cyclization of enylethyl)]-2-(2-methoxy-3,
4-methylenedioxyphenyl) acetamide (10). The synthetic compound (1) was
shown to differ from natural fumarizine, the structure of which is no
t formula (1).