Authors: Zimmer, H Amer, A Baumann, FM Haecker, M Hess, CGM Ho, D Huber, HJ Koch, K Mahnke, K Schumacher, C Wingfield, RC

Citation: H. Zimmer et al., Synthesis of 8-substituted xanthines and their oxidative skeleton rearrangement to 1-oxo-2,4,7,9-tetraazaspiro[4,5]dec-2-ene-6,8,10-triones, EUR J ORG C, (9), 1999, pp. 2419-2428