PATENT ASSIGNEE'S COUNTRY | Japan |
UPDATE | 11.99 |
PATENT ASSIGNEE | Sankyo (Tokyo) |
PATENT CLAIMS |
Thiazolidine-2,4-dione-3-[C(Ph)3]-5-(4'-hydroxybenzyl) prepn - Reacting p-hydroxybenzaldehyde with thiazolidine-2,4-dio ne & thereafter reacting prodt with acetic anhydride to form 5-(4-acetoxybenzylidene)thiazolidine-2,4-dione (I) - Hydrogenating (I) to form 5-(4-acetoxybenzyl)thiazolidine -2,4-dione (II) - Reacting (II) with triphenylmethyl chloride to form 5-(4-aceto xybenzyl)-3-triphenylmethylthiazolidine-2,4-dione (III) - Hydrolyzing (III) |
PATENT PHOTOCOPY | Available on request |
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