Triisobutylaluminium mediated carbocyclisation of sugar derived spiroketals and ketosides
摘要:
The carbocyclisation of sugar derived spiroketals and ketosides under the agency of triisobutylaluminium is presented. In addition, the synthetic usefulness of cyclooctenic product 21, derived from the corresponding exo-glycal 20, was shown by its transformation into conformationally locked L-idose analogues 22 and 23. (C) 2001 Elsevier Science Ltd. All rights reserved.
Stereoselective Transformations on <scp>d</scp>-Glucose-Derived Eight-Membered Ring Carbocycles
作者:Peter A. V. van Hooft、Remy E. J. N. Litjens、Gijsbert A. van der Marel、Constant A. A. van Boeckel、Jacques H. van Boom
DOI:10.1021/ol007047+
日期:2001.3.1
[structure: see text]. The cyclooctenol derivative 1 can be transformed into the nine-membered ring lactone 3, as well as the amino-containing carbocycles 4 and 5. The corresponding ketone 2 gives access to the conformationally locked azasugar 6.
Triisobutylaluminium mediated carbocyclisation of sugar derived spiroketals and ketosides
作者:Peter A.V van Hooft、Gijsbert A van der Marel、Constant A.A van Boeckel、Jacques H van Boom
DOI:10.1016/s0040-4039(00)02318-2
日期:2001.2
The carbocyclisation of sugar derived spiroketals and ketosides under the agency of triisobutylaluminium is presented. In addition, the synthetic usefulness of cyclooctenic product 21, derived from the corresponding exo-glycal 20, was shown by its transformation into conformationally locked L-idose analogues 22 and 23. (C) 2001 Elsevier Science Ltd. All rights reserved.