Enantiodifferentiating transformation of prochiral 1,3,5-pentanetriols controlled by intramolecular van der Waals attractions
摘要:
Acetalization of prochiral 1,3,5-pentanetriol derivatives (5) with l-menthone proceeded enantioselectively (3.0-4.6:1) to give chiral spiroacetals (6) which can be utilized as versatile chiral building blocks.
Total Synthesis of (−)‐5‐Deoxyenterocin and Attempted Late‐Stage Functionalization Reactions
作者:Lilla Koser、Thorsten Bach
DOI:10.1002/chem.202301996
日期:2023.10.13
The polyketide natural product (−)-5-deoxyenterocin (2) was stereoselectively synthesized from aldehyde 1, which was in turn obtained from pentane-1,3,5-triol and (−)-menthone. An attempted functionalization at position C5 remained futile, although several C−H activation methods could be successfully applied to (3aR)-(+)-sclareolide (3).
Acetalization of prochiral 1,3,5-pentanetriol derivatives (5) with l-menthone proceeded enantioselectively (3.0-4.6:1) to give chiral spiroacetals (6) which can be utilized as versatile chiral building blocks.