Autor: E. Yu. Maksareva, A. S. Sigachev, Angelina N. Kravchenko, K. A. Lyssenko, Nina N. Makhova, Oleg V. Lebedev, K. Yu. Chegaev, Pavel A. Belyakov
Rok vydání: 2003
Předmět:
Zdroj: Russian Chemical Bulletin. 52:192-197
ISSN: 1066-5285
DOI: 10.1023/a:1022473004714
Popis: New (1R*,5S*)-2-R-2,4,6,8-tetraazabicyclo[3.3.0]octane-3,7-diones containing the terminal carboxy or hydroxy group in the substituent R were synthesized by cyclocondensation of 4,5-dihydroxyimidazolidin-2-one with 1-R-ureas. Single-crystal X-ray diffraction analysis showed that 2-carboxyethyl-2,4,6,8-tetraazabicyclo[3.3.0]octane-3,7-dione crystallizes as a racemate.
Databáze: OpenAIRE
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