We have accomplished the firsttotalsynthesis of longimicinD (1), which displays potent cytotoxicity against human pancreatic carcinoma cells. The bis-THF core bearing congested stereocenters was constructed by our methodology for synthesis of poly-THF cores, which consists of asymmetric alkynylation with the C4 unit and stereodivergent THF ring formation. Although we had planned to join the C9–C34
Longimicins A−D: Novel Bioactive Acetogenins from <i>Asimina longifolia</i> (Annonaceae) and Structure−Activity Relationships of Asimicin Type of Annonaceous Acetogenins
作者:Qing Ye、Kan He、Nicholas H. Oberlies、Lu Zeng、Guoen Shi、Dean Evert、Jerry L. McLaughlin
DOI:10.1021/jm9600510
日期:1996.1.1
to the isolation of four novel bioactive annonaceous acetogenins: longimicins A-D (1-4). Compounds 1-4 represent the asimicin type of acetogenins; however, the locations of the adjacent bis-tetrahydrofuran (THF) ring moieties are shifted along the aliphatic chains compared to the known compounds of this type. They are the first examples among this type of acetogenins with the placements of the ring