111651-31-1Relevant articles and documents
SYNTHESIS AND CONFORMATIONS OF 2,3:4,5- AND 2,4:3,5-DI-O-ISOPROPYLIDENE-D-MANNITOL
Gawronska, Krystyna
, p. 79 - 86 (1988)
The 2,3:4,5- (8) and 2,4:3,5-di-O-isopropylidene (10) derivatives of D-mannitol have been prepared from 1,6-di-O-benzoyl-D-mannitol and their structures established by (13)C-n.m.r. spectroscopy.The 1,3-dioxane rings in 10 adopt a skew conformation and the sugar carbon chain in 8 is bent around the C-3-C-4 bond, as found by i.r. data and molecular mechanics calculations.Oxidation of 8 with pyridinium dichromate gave 2,3:4,5-di-O-isopropylidene-D-mannono-1,6-lactone (12).
An iterative acetylene-epoxide coupling strategy for the total synthesis of longimicin C
He, Yan-Tao,Xue, Song,Hu, Tai-Shan,Yao, Zhu-Jun
, p. 5393 - 5397 (2007/10/03)
Longimicin C, a naturally occurring annonaceous acetogenin possessing a C2-symmetrical bis-THF moiety and a short hydrocarbon chain between its THF-containing region and a terminal γ-lactone, was synthesized for the first time. The total synthe