Chinoin Gyogyszer Es Vegyeszeti Termekek Gyara Rt.

Consortium Fur Elektrochemische Industrie Gmbh

Ildiko Jodal

Jozsef Szejtli

Tibor Szabo

Lajos Szente

Laszlo Institoris

Andras Liptak

Pal Nanasi

Lorant Janossy

Peter Fugedi

Lili Kandra

The invention relates to novel partially methylated carboxyacyl-cyclodextrins of the general formula (I), ##STR1## wherein A means the cyclodextrin skeleton of the general formula (II) ##STR2## containing the substituents in the position labelled by the wavy line; W stands for an alkylene, alkenylene or arylene group or the substituted derivatives thereof;

Methylated cyclodextrin type compounds and process for preparing same

The invention relates to a process for the manufacture of heptakis-[2,6-di-O-methyl]-beta-cyclodextrin by methylating beta-cyclodextrin in an organic phase wherein beta-cyclodextrin is methylated with dimethylsulfate in the presence of an alkalihydroxide at temperatures of from -10.degree. to 0.degree. C.

Process for the manufacture of

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Debrecen, Hungary

Ildiko Jodal