Convergent total synthesis of the racemic HIF-1 inhibitor laurenditerpenol
作者:Michael E. Jung、G-Yoon J. Im
DOI:10.1016/j.tetlet.2008.05.116
日期:2008.8
The convergent total synthesis of the HIF-1 inhibitor laurenditerpenol 1a is reported. The key step is the Julia olefination–reduction process between the two components, the sulfone 4 (prepared from the dimethylfuran-maleic anhydride Diels–Alder adduct) and the aldehyde 3 (prepared from 3-methylcyclohexenone).
Total Synthesis of Racemic Laurenditerpenol, an HIF-1 Inhibitor
作者:Michael E. Jung、G-Yoon Jamie Im
DOI:10.1021/jo902029x
日期:2009.11.20
The convergent total synthesis of the HIF-1 inhibitor laurenditerpenol 1 and its diastereomer 1' is reported. The key step involves the Julia-Kocienski olefination-reduction process between the sulfone 55 and the aldehyde 54. The unusual trimethylated oxanorbornane sulfone 55 was successfully synthesized from the known exo Diels-Alder adduct 24 of 2,5-dimethylfuran 7 and maleic anhydride 23 in 8 steps. The aldehyde 54 was prepared by ring-opening and elaboration of lactone 41. In addition, four analogues of I were also successfully synthesized for biological testing.