p. 2341 - 2353
(2007/10/03)2-phenyl-1,4-diazaspiro[4.5]decane-1,3-diene 4-oxide
2-ethyl-3-phenyl-1,4-diazaspiro[4.5]deca-1,3-diene 1-oxide
3-ethyl-4-hydoxy-2-phenyl-1,4-diazaspiro[4,5]dec-1-ene
2,2-diethyl-3-phenyl-1,4-diazaspiro[4.5]dec-3-en-1-yloxy
tert-butyl bromoisobutyrate