Cycloids containing oxygen. 



CYCLOID Ci4H;04 



1,2-Naphthacoumaiin carboxylic 



t^io^e 



acid 



-CO,H 



'\o CO 



Betti, M. e Mundici, C. M 



Konia, Rend. Ace. Lincei, (Ser. 5), 13, 

 ii, 1904 (5^2-551). 



CYCLOID Ci4Hi_04 



Furalpaeonol. 



Courant, St. und Kostanecki, St. von. 

 Berlin, Ber. D. cliem. (ies., 39, 1900, 

 (4031-403i). 



CYCLOID CitHi.Oa 



Ketophenylparacophenone 



Pb.CO.CII— CO 

 Ph.CH.O.CO 

 and its a^"IUDE and o-toluidide. 



Ruhemann, S. London, J. Chem. 

 Soc, 89, 1906, (I236-124G); [abstract] 

 London, Proc. Chem. Soc, 22, 1906, 

 (197-198). 



CYCLOID Ci7Hu04 



Xanthylacetoacetic acid. 



Ethyl ester 



0<&5'>CH.CHAc.C02Et 



and its a-eihyl and a-henzoyl derivatives. 



Fosse, R. et Robyn, A. Paris, C.-R. 

 Acad, sci., 143, 19(iG, (239-242). 



CYCLOID C,3Hi404 



a-Methyl-7,7-diphenylaconic acid 

 COzH.CiCMe 

 Phj.C.O — >co 



Stobbe, H. und Noetzel, M. Berlin, 

 Ber. D. chem. Ges., 39, 1906, (1070- 

 1072). 



CYCLOID C19HJ4O4 



3',4'-Dioxy-a-naphthoflavanone 



The DIMETHYL (COMPOUND and its 

 a-isonltroso derivative. 



Bigler, P. und Kostanecki, St. von. 

 t.c. (4034-4037). 

 (d-6534) 



733 1911 



CYCLOIDS WITH FIVE OXYGEN 



ATOMS. 



CYCLOIDS CtHsOs 



Pyrane dicarboxylic acid 



-,^ CH : C(C02H) Q 

 ^ti^^Cii , C(C02H)^^ 



Blaise, E. E. et Gault, H. Paris, 

 C.-R. Acad, sci., 142, 1906, (452-454). 



CYCLOID CuHieOs 



Cineolic acid 



CH2.CMe(C02H) 



>0 



CH2.CH(C02Hi.CMe2 



Rupe, H. und Schlocliofif, P. Berlin, 

 Ber. D. chem. Ges., 38, 1905, (1502- 

 1507). 



CYCLOIDS C15H12O5 



2,2',4'-Trioxyflavanone 



Trimethoxy flavanone and its 



a-isonitroso derivative. 



Bonifazi, E., Kostanecki, St. von und 



Tambor, .J. Berlin, Ber. D. chem. Ges., 



39, 1906, (86-91 j. 



3, 2', 4- Trioxyflavanone 



Trimethyl compound 



and its a-iso-nitroso derivative. 



Kostanecki, St. von, Lampe, V. und 

 Triulzi, S. t.c. (92-96). 



CYCLOIDS C1GH12O5 



2(2,3,4-Trioxyphenyl-4-anliydro- 

 methyl-7-oxy-i,4-benzopyranole. 

 Btilow, C. und Schmid, C. i.e. (214- 

 225). 



Xanthylmalonic acid- 



Ethyl ester of the seminitrile 



: [CeH,]^ : CH.CHCy.COjEt 



Fosse, R. et Robyn, A. Paris, C.-R. 

 Acad, sci., 143, 1906, (239-242) 



CYCLOID C19H12O5 



3',4'-Dioxy-a-naphthoflavonole 



and the dlmethyl compound. 

 Bigler, P. und Kostanecki, St. von. 

 Berlin, Ber. D. chem. Ges., 39, 1906, 

 (^4034-4037). 



CYCLOID C19H18O5 



2(2,3,4-Trimethoxyphenyl)-4-anhy- 

 dromethyl-7-oxy-l,4-benzopyranole 



and its hydrochloritle, sulpluite and 

 picrate. 



Billow, C. und Schmid, C. t.c. (214- 

 225;. 



3 B 



