D-Erythronolactone as a C4 building unit. Part 2.1 A short and efficient synthesis of both enantiomers of epi-muricatacin, a diastereoisomer of the native acetogenin from Annona muricata
作者:Andreas Gypser、Marcus Peterek、Hans-Dieter Scharf
DOI:10.1039/a607158i
日期:——
Both enantiomers of epi-muricatacin (+)- and
(-)-2 have been prepared from
2,3-O-isopropylidene-D-erythrose 7. The enantiomers (+)-
and (-)-2 are obtained in good yields and with high
diastereoisomeric and enantiomeric purity. The aim of the
synthesis is to obtain both enantiomers of the target molecule
from one chiral precursor. This was made possible by the reaction
sequence for the introduction of the two different side chains
being exchangeable.
两种对映体epimuricatacin的正(+)和负(-)2已由2,3-O-异丙腈-D-赤藓糖7制备而成。这些对映体(+)和(-)2以良好的产率和高的非对映体及对映纯度获得。合成的目标是从一个手性前体获得目标分子的两种对映体。这得以实现是因为引入两种不同侧链的反应序列是可互换的。