115072-66-7Relevant articles and documents
Strength from weakness: Conformational divergence between solid and solution states of substituted cyclitols facilitated by CH...O hydrogen bonding
Vibhute, Amol M.,Sureshan, Kana M.
, p. 4892 - 4908 (2014)
We have investigated the conformational preferences of a series of cyclitol derivatives, namely mono- and diesters of 1,2:5,6-di-O-isopropylidene-myo- inositol and 1,2:5,6-di-O-cyclohexylidene-myo-inositol, in both solid and solution states. The solid-sta
(±)-1,2:5,6-Di-O-isopropylidene-myo-inositol and (±)-6-O-benzoyl-1,2:4,5-di-O-isopropylidene-myo-inositol: A practical preparation of key intermediates for myo-inositol phosphates
Khersonsky, Sonya M,Chang, Young-Tae
, p. 75 - 78 (2007/10/03)
A simple and practical synthetic procedure for the versatile intermediates, (±)-1,2:5,6-di-O-isopropylidene-myo-inositol and (±)-6-O-benzoyl-1,2:4,5-di-O-isopropylidene-myo-inositol, is described.
Regioselective functionalizations and conformational studies of di-O-isopropylidene-myo-inositol derivatives
Chung, Sung-Kee,Ryu, Youngha
, p. 145 - 168 (2007/10/02)
(+/-)-1,2:4,5-Di-O-isopropylidene-myo-inositol (5) and (+/-)-1,2:5,6-di-O-isopropylidene-myo-inositol (6) could be regioselectively functionalized in reactions including alkylation, acylation, and silylation at HO-3 in preference to HO-6 and HO-4, respectively, under specific conditions.The presence of intramolecular hydrogen bonding was evident in IR and 1H NMR spectra, and the HO-3 group was identified as the hydrogen-bonding donor in 5 and 6.In their crystalline states, diol 5 prefers a chair conformation and diol 6 a twist boat (skew) conformation.Both compounds appear to have substantial populations of chair conformations in the gas and solution phases, on the basis of the MM-2 energy minimizations and comparisons of vicinal coupling constants observed in the 1H NMR spectra (in CDCl3 and Me2SO-d6) and calculated from the crystal and MM-2 conformations.It is suggested as an explanation for the observed selectivities that the kinetic acidity of the HO-3 group may be enhanced through its intramolecular hydrogen bonding with the cis-vicinal oxygen, or the nucleophilicity of the 3-alkoxide may be enhanced due to its interaction with the cis-vicinal oxygen in a manner similar to the through-space α-effect.