Gözler B.2019-10-272019-10-2719900385-54140385-5414https://doi.org/10.3987/COM-89-5209https://hdl.handle.net/11454/24362The pentacyclic phenolic proaporphine (-)-labrandine (1) has been isolated from Turkish Roemeria hybrida (L.) DC. (Papaveraceae). O-Methylation furnished (-)-misramine (2) which is also present in the plant. Acetylation of 1 afforded (-)-2,10-diacetyllabrandine (3), and selective deacetylation of the latter provided (-)-10-acetyllabrandine (4). © 1990.en10.3987/COM-89-5209info:eu-repo/semantics/closedAccessArticle311149152Q4