Synthesis of Analogues of <i>Eunicea</i> γ-Cembranolides Containing Cyclic Ethers via Saponification
作者:Abimael D. Rodríguez、Ivette C. Piña、Ana L. Acosta、Catherine Ramírez、Javier J. Soto
DOI:10.1021/jo001025j
日期:2001.2.1
A method for the synthesis of derivatives of the lead structures euniolide (1), 12,13-bisepieupalmerin (2), and eupalmerin acetate (3) containing tetrahydrofuran and tetrahydropyran ring systems was developed on the basis of alkali-induced intramolecular oxacyclizations. Representatives of the new analogues were submitted to the in vitro antitumor cell-line-screening program of the National Cancer
Pintoxolanes A-C, Highly Functionalized 3,14-Oxa-bridged Cembranoids from the Caribbean Gorgonian Coral<i>Eunicea pinta</i>
作者:Janet Figueroa、Brunilda Vera、Abimael D. Rodríguez
DOI:10.1002/hlca.201300282
日期:2014.5
Three new cembrane‐based diterpenes possessing the rare 3,14‐oxa‐bridged moiety were isolated from the hexane extract of a southwestern Caribbeangorgonianoctocoral, Eunicea pinta, together with seven known cembranoid diterpenes. The structures of pintoxolanes A–C (1–3, resp.), including their relative configurations, were deduced from spectroscopic data and chemical‐correlation experiments. Experimental