Stereoselective routes to aryl substituted γ-butyrolactones and their application towards the synthesis of highly oxidised furanocembranoids
作者:Allan Patrick G. Macabeo、Andreas Kreuzer、Oliver Reiser
DOI:10.1039/c1ob05113j
日期:——
Titanium chelate addition of aryl nucleophiles to cyclopropyl aldehyde 6 followed by a tin-catalyzed one-pot retro-aldol, acetalisation and lactonisation sequence afforded cis and trans γ-aryllactone acetals. A γ-furyllactone derived by this approach was further transformed in two steps to model compounds for the oxidised northeastern sectors of selected Pseudopterogorgia diterpenoids.
钛螯合物将芳基亲核试剂螯合加成到环丙基醛6上,然后进行锡催化的一锅逆向羟醛缩醛的缩醛化和内酯化,得到顺式和反式γ-芳基内酯缩醛。通过这种方法得到的γ-呋喃内酯在两个步骤中被进一步转化,以对选定的拟鞭毛虫二萜类化合物的东北东北部氧化化合物建模。