Alkaloid compound and preparation method thereof, and applications of alkaloid compound as marine antifouling agent

The invention relates to an alkaloid compound and a preparation method thereof, and applications of the alkaloid compound as a marine antifouling agent, belongs to the field of biology, and particularly relates to an alkaloid compound, or a tautomer, a stereoisomer, a racemate, the non-equal mixture of enantiomers, a geometric isomer, a solvate, a pharmaceutically acceptable salt or a prodrug thereof, and a pharmaceutical composition containing the compound. The invention further discloses applications of the compounds and the pharmaceutical composition thereof in preparation of anti-marine biofouling coating materials. 种生物碱化合物及其制备方法和作为海洋防污剂的应用，本发明属于生物领域,并具体涉及种生物碱化合物,或其互变异构体、立体异构体、外消旋体、对映异构体的非等量混合物、几何异构体、溶剂化物、药学上可接受的盐或前药,以及包含该化合物的药物组合物。本发明还公开了这类化合物及其药物组合物在制备抗海洋生物污损涂料中的应用。