3-Aminorhodanine 2 was reacted with cyclic anhydrides yielding 3-(2,5-dioxopyrrolidin-1-yl), 3-(2,6-dioxopiperidin-1-yl), and 3-(1,3-dioxoisoindolin-2-yl)rhodanine 6-8, which in turn were condensated in 5 position with several aldehydes yielding the new rhodanine derivatives 9-11.

中文翻译：

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3-（2,5-二氧杂吡咯烷-1-基），3-（2,6-二氧哌啶-1-基）和3-（1,3-二氧异吲哚啉-2-基）若丹宁。一种新型的若丹宁衍生物

3-氨基A丹宁2与环酐反应生成3-（2,5-二氧杂吡咯烷-1-基），3-（2,6-二氧杂哌啶-1-基）和3-（1,3-二氧异吲哚啉-2- yl）rhodanine 6-8，然后在5位与几个醛缩合，生成新的rhodanine衍生物9-11。