S. Jarosz et S. Skora, A convenient route to enantiomerically pure bicyclo[4.3.0]nonanes from sugar allyltin derivatives, TETRAHEDR-A, 11(6), 2000, pp. 1425-1432
Tandem Wittig-type Diels-Alder reactions between sugar derived phosphonates
and dienoaldehydes obtained from sugar allyltins lead, with high stereosel
ectivity, to complex oxygenated perhydroindene derivatives with the trans j
unction between the five- and six-membered rings. The configuration at the
newly created stereogenic centers in such bicyclo[4.3.0] systems may be mon
itored by the geometry of chiral phosphonates. (C) 2000 Elsevier Science Lt
d. All rights reserved.