Tetrahedron Letters p. 2273 - 2276 (1981)
Update date:2022-08-17
Topics:
Tabushi, Iwao
Yuan, Lung Chi
Shimokawa, Kazuhiro
Yokota, Kan-ichi
Mizutani, Tadashi
Kuroda, Yasuhisa
Doubly capped β-cyclodextrin was firstly prepared in good yield by the treatment of β-cyclodextrin with an excess amount (2.6/1 mol/mol) of benzophenone-3,3'-disulfonyl chloride.This successful double capping demonstrates that benzophenone-3,3'-disulfonyl capping takes place on A, C rings.The present double cap is a useful key intermediate for the preparation of regiospecifically tetrasubstituted cyclodextrins.
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