Tetrahedron Letters p. 3221 - 3224 (1991)
Update date:2022-07-30
Topics:
Kessar
Vohra, Rahul
Kaur, Nachhattar Pal
Treatment of the BF3 complex of 6,7-methylenedioxy-2-methyltetrahydroisoquinoline (2) with secbutyllithium followed by addition of piperonal gave α-hydroxybenzyltetrahydroisoquinolines 3a and 3b, while addition of 3,4-methylenedioxyphthaldehyde (4) afforded alkaloids (±)corytensine (5) and (±) egenine (6) along with isomeric hemiacetals 7 and 8.
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