摘要
A new acetogenin 2,4ets-cis-isoannonareticin (2-1) (2,4-cis-bullatacinone) and a known bullatacinone (2,4--trans-isoannonareticin) (2-2) were a pair of isomersepimeric at C-2 which were isolated as two pure natural compounds from Annonareticulata L. by using preparative TLC. Their structures and the relativestereochemistry were elucidated on the basis of the spectral analysis.
A new acetogenin 2,4ets-cis-isoannonareticin (2-1) (2,4-cis-bullatacinone) and a known bullatacinone (2,4--trans-isoannonareticin) (2-2) were a pair of isomersepimeric at C-2 which were isolated as two pure natural compounds from Annonareticulata L. by using preparative TLC. Their structures and the relativestereochemistry were elucidated on the basis of the spectral analysis.
