Studies toward the Total Synthesis of Popolohuanone E: Enantioselective Synthesis of 8-O-MethylpopolohuanoneE
摘要:
[GRAPHIC]8-O-Methylpopolohuanone E (2) was synthesized in a highly convergent manner starting from the cis-fused decalin derivative accessible from the (-)-Wieland-Miescher ketone analogue. The synthetic method features a biogenetic-type annulation of the phenolic and quinone segments to regioselectively construct the central tricyclic ring system as the key step.
Studies toward the Total Synthesis of Popolohuanone E: Enantioselective Synthesis of 8-O-MethylpopolohuanoneE
摘要:
[GRAPHIC]8-O-Methylpopolohuanone E (2) was synthesized in a highly convergent manner starting from the cis-fused decalin derivative accessible from the (-)-Wieland-Miescher ketone analogue. The synthetic method features a biogenetic-type annulation of the phenolic and quinone segments to regioselectively construct the central tricyclic ring system as the key step.
decalin segment 6 required for the totalsynthesis of popolohuanone E (1) was efficiently synthesized starting from the enantiomericallypure (−)-Wieland-Miescher ketone derivative 9; the method features ortho ester Claisen rearrangement of 15 and Ir-catalyzed hydrogenation of 17 (Scheme 2). Furthermore, by employing 6 as the key decalin segment, the first totalsynthesis of natural (+)-arenarol (2) related