Cycloids containing nitrogen. 760 



1932 



OxYrnENYLAMINOPYRIMlDINE 



NHPh.C<J;^^-g{{>CH 

 Johnson, T. B. and Johns, C. 0. I.e. 



Cytosine 

 5-iodocytosine 



Johnson, T. P.. and Johns, C. 0. I.e. 

 CYCLOIDS C4H4O2N2 



Dioxypyrimidine 



Diethyl ether of the ciilorothih 



DERIVATIVE 



EtS.C<^;^[5^>C.0Et 



and of tlie aminu-tiiio derivative 



EtS.C<| i^^|J>C.OEt 



Johnson, T. B. and McCoUum, E. V. 

 i.e. (437-449). 



5-Iodo-6-oxy-2-ethyltiiiolpy'rimidink 



EtS.C-^^ ^-,^^01 



Johnson, T. B. and Johns, C. 0. t.c. 

 (305-318). 



DlOXYAlIISdl'VItlMIDINE 



Etliyl ether 

 NH2.C<JJ^^2>C.OEt 



Johnson, T. B. and McCoUum, E. V. 

 t.c. (437-449). 



5-Oxy-cytosine 

 Etinil ether 



Johnson, T. B. and McCoUum, E. V. 

 J.c. 



Uracil 



5-IODOrRACIL 



p^ NII.CO-. .,. 

 '""<NIT.CII^^''- 



Johnson, T. B. and Johns, C. 0. t.c. 

 (305-318). 



Pyvureide 



BUO.MO DEIIIVATIVE 



CIlB,.:C.Nn 



Go.Nir 



and tlie DinniiMU derivative. 



Gabriel, S. T/iel)i^s Ann. Chem., 

 Leipzig, 348, 1900, (50-90). 



CYCLOIDS C4H4O3N, 



Trioxypyrimidine 



Methyl ethyl ether of the thio 



DERIVATIVE 



MeS.C<^^gg>C.OEt 



Johnson, T. B. and McCollum, E. V. 



J. Biol. Chem., New York, K.Y., 1, 

 190G, (437-449). 



Diethyl ether of the thio derivative 

 EtS.C<^^g{J>C.OEt 



and ETHYL ether 

 .,(. NPI.CO^^ OFt 



Johnson, T. B. and McCollum, E. V. 



I.e. 



CyCLOID C4H4O4N2 



Dialuric acid 



Ainmon turn, sodium and jwtasshnn salts. 



Friedrich, H. IJebigs Ann. Chem., 

 Leipzig, 344, 1900, (1-18). 



CYCLOID CiHrONz 



Methylpyrazolone 



NH< 



CO.CH, 



NH< 



N : CMe 



IsONITROSO DERIVATIVE 



.CO.C: NOH 

 "N : CMe 

 and the corresponding nitro DEravATivE. 



Betti, M. [Formazione di isonitroso- 

 nietilpiiazolone dall'] . . . etere bis- 

 diazoacetacetieo. Gazz. chiiii. ital., 

 IJonia, 34,i, 1904, (179-194). 



CYCLOID CsHsOjNz 



C-Ethylhydantoin 



Kt.Cll.Nll 

 CO. Nil' 



>C0 



Gabriel, S. Liebigs Ann. Choni., Leip- 

 zig, 348, 1900, (50-90). 



CYCLOID CfiH,,0sN2 



Acetyldialuric acid 



c'0<J;;j{;J-iJ]>(!H.o.co.CH3 



also liENZOVIIilALUIilC ACID CnIIgOjNz 



Friedrich, II. op. r]t. 344, 1900, (1-18). 



