Hemsleya amabilis cucurbitane tetracyclotriterpene compounds, pharmaceutical composition containing compounds and application thereof

The invention relates to novel hemsleya amabilis cucurbitane tetracyclotriterpene compounds disclosed as structural formula (I) or structural formula. The invention also relates to a pharmaceutical composition using the compounds as active ingredients and application of the compounds and pharmaceutical composition in drugs for treating lung adenocarcinoma, colon cancer and prostate cancer.