作者:Bindumadhavan Venugopalan、Pravin J. Karnik、Shashikant Shinde
DOI:10.1039/p19960001015
日期:——
Heating the propynyldihydroartemisinin derivatives 4 and 5 with Bu3SnH–AIBN in toluene gave the stereoisomers 18 and 20 (5-exo trig products) respectively. The allyl ether 6 gave 21, a 1,2-cis 1,5-trans product under similar conditions, whereas the ether 7 gave two compounds, 22 (1,2-cis 1,5-cis) and 23 (1,2-cis 1,5-trans). The bromo ethers 8–12 gave their corresponding debrominated products whereas the bromo ether 14 and the bromo sulfides 15 and 16 gave the olefin 30.
将丙炔基二氢青蒿素衍生物4和5与Bu3SnH–AIBN在甲苯中加热,分别得到了立体异构体18和20(5-exo trig产物)。烯丙基醚6在类似条件下得到21,这是一个1,2-顺式1,5-反式产物,而醚7则得到两个化合物,22(1,2-顺式1,5-顺式)和23(1,2-顺式1,5-反式)。溴醚8–12得到相应的脱溴产物,而溴醚14和溴硫醚15与16则得到烯烃30。