Qiu, Maosong Diterpenoids from Croton crassifolius include a novel skeleton possibly generated via an intramolecular [2+2]-photocycloaddition reaction. [electronic resource] - Phytochemistry Jan 2018 - 103-110 p. digital Publication Type: Journal Article ISSN: 1873-3700 Standard No.: 10.1016/j.phytochem.2017.10.008 doi Subjects--Topical Terms: Cell Line, TumorCell Survival--drug effectsCroton--chemistryCycloaddition ReactionDiterpenes--chemical synthesisDose-Response Relationship, DrugHumansMolecular StructurePhotochemical ProcessesStructure-Activity Relationship