Abstract: The present invention provides a huperzine B crystal and a preparation thereof. Specifically, the present invention provides a crystal form A of the huperzine B crystal. An X-ray diffraction pattern of the crystal form A has the following 2? angular characteristic absorption peak: 9.56±0.2, 13.90±0.2, 14.88±0.2, 16.00±0.2, 25.39±0.2, and 28.78±0.2.

Abstract: Provided by the present disclosure are an amino quinazolinone and amino isoquinolone derivatives. It is verified by numerous experiments that the compounds provided by the present disclosure have good inhibiting effects on PI3K? and PI3K?, most of the compounds have prominent inhibiting effect on PI3K?, and show strong growth inhibiting effect on PIK3CA mutant tumor cells such as human breast cancer cell strain (MCF7). Therefore, the amino quinazolinone and amino isoquinolone derivatives according to the present disclosure can be applied in the preparation of anti-tumor and anti-inflammatory medicines, and can be used as PI3K? inhibitors in the preparation of medicines for treatment of human or animal cell proliferation related tumors, the medicines comprising the derivatives any one or more of pharmaceutically acceptable salts and solvates thereof as well as pharmaceutically acceptable carriers.