- Chemical Transformation of Protoberbines. XI. A Novel Synthesis of 2,3,10,11-Tetraoxygenated Protoberberine Alkaloids from Corresponding 2,3,9,10-Tetraoxygenated Protoberberine Alkaloids.
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2,3,9,10-Tetraoxygenated protoberberin alkaloids, berberine (1a), palmatine (1b), and coptisine (1c) were efficiently converted into the corresponding 12-hydroxy-2,3,10,11-tetraoxygenated protoberberines (6a, 6b, 6c) through an oxidative C8-C8a bond cleav
- Hanaoka, Miyoji,Cho, Won Jea,Marutani, Mari,Mukai, Chisato
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p. 195 - 199
(2007/10/02)
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- TRANSFORMATION OF 2,3,9,10-TETRAOXYGENATED PROTOBERBERINE ALKALOIDS INTO 2,3,10,11-TETRAOXYGENATED PROTOBERBERINE ALKALOIDS
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2,3,10,11-Tetraoxygenated tetrahydroprotoberberine (6) were synthesized from the corresponding 2,3,9,10-tetraoxygenated protoberberine alkaloids (1) through oxidative C8-C8a bond cleavage, photocyclization, and deoxygenation.
- Hanaoka, Miyoji,Marutani, Mari,Saitoh, Kazuhiro,Mukai, Chisato
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p. 2927 - 2930
(2007/10/02)
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