论文部分内容阅读
Penioxalamine A (1), a novel prenylated spiro-oxindole alkaloid having a unique seven-membered nitrogen heterocycle system, was isolat~ d from the fungus Penicillium oxalicum TW01-1.The structure of 1 was elucidated on the basis of the spectral data,single-crystal X-ray diffraction, and CD analysis.