Model study and partial synthesis of prehispanolone and 14,15-dihydroprehispanolone from hispanolone
作者:En Si Wang、Bao Sheng Luo、Thomas C.W. Mak、Yuen Min Choy、Henry N.C. Wong
DOI:10.1016/0040-4039(94)85325-8
日期:1994.10
intramolecular Michael addition as a pivotal step, furan 4 has been converted to dioxaspiro compounds 5 and 6, whose heterocyclic frameworks constitute important structural units of 14,15-dihydroprehispanolone 3 and prehispanolone 1, respectively. Hispanolone 2 was converted to 3 as well as 1 by utilizing a similar strategy.
Total synthesis of (−)-hispanolone and an improved approach towards prehispanolone
作者:Wing Shun Cheung、Henry N.C. Wong
DOI:10.1016/s0040-4020(99)00627-4
日期:1999.9
form of (−)-2, employed in our partial synthesis of the specific platelet activating factor receptor antagonist prehispanolone (3), was prepared from (S)-(+)-Wieland-Miescher ketone (1). Moreover, an improvement of the literature synthesis en route to prehispanolone (3) starting from synthetic (−)-hispanolone (2) was also carried out.
Synthetic studies on prehispanolone and 14,15-dihydroprehispanolone
作者:En Si Wang、Yuen Min Choy、Henry N.C. Wong
DOI:10.1016/0040-4020(96)00705-3
日期:1996.9
Michael addition as a pivotal step, butenolide 5, furans 6 and 7 have been converted to dioxaspiro compounds 8, 9, 10 and 11, whose heterocyclic frameworks constitute important structural units of prehispanolone (2) as well as 14,15-dihydroprehispanolones (3) and (4), respectively. Hispanolone (1) was converted to 2, 3 and 4 by utilizing a similar strategy.