Cycloids containing oxygen. 



su 



1911 



CH2<, 



CYCLOID CtHioOs 



Dimethylpentoxylactonic acid 



Q^ ^CMe(OH)— 00 



' CMe(C02H).6 



And its salts. 



Fittig u. Kraus, P. A., 353, (13j. 



CYCLOIDS CsHsOs 



Methronic acid 



TETTRAEROMO DEIIIVATIVE C3H405Br4 



TrepMliefiF, H. H., 40, (4388). 

 7-Methyl-pyrane dicarboxylic acid 



and its methyl ester aad dibromide. 

 Blaise et GaiQt. BI., 1, (129j. 



CYCLOIDS CaHfsOs 



Methylethylpentoxylactonic acid 



,CEt',OHj — CO 



TMeCCOjHj.O 

 Salts and xitrile. 

 Fittig u. Panayeff, J. von. A., 353, 



(2i). 



Dimethylhexoxylactonic acid- 

 Fittig u. Lentz, F. A., 353, (52j. 



CYCLOID CsHioOs 



7-Ethyl-pyrane dicarboxylic acid 



.,^C((J02ii) : OH^pLrp 

 ^CCCOjH) : CH-^^^^^^ 

 and its .methyl ester. 

 Blaise et Gault. Bl., 1, (129). 



CYCLOID CHhOs '■ 



Ethyldimethylpentoxylactonic 

 acid 



^'^ '^CMe(CO,Hj.O 



:uk1 its salts. 



Fittig u Peters, W. A., 353, (38). 



CYCLOID CH.Os 



Phenylketoparaconic acid 



^ oc).cii.c...di 



O— CHPh 



Diethylamine derivative of the 



ethyl ester 



Also the o and m-nitro, p-oxy and p- 



methoxy derivatives of the ethyl ester 



and their diethylamine derivatives. 



Gault. Bl., 35, (12G4j. 



(D-8536) 



CYCLOID CisHisOb 



Hexylpyrane dicarboxylic acid 

 CeH,3.CH<gH:C(C0,H)^0 

 and its methyl ester. 

 Blaise et Gault. BL, 1. (129). 



CYCLOIDS CnEuOs 



Xanthylmalonic acid 



0<p^m'>CH.CH(COjHj, 

 and its se-MInitrile. 

 Fosse. Bl., 35, (1005). 



Brazilein. 

 Herzig u. PoUak, J. M., 27, (743). 



CYCLOID CifiHuOs 



Brazilia 



and tetrasiethyl dehydrobr.vzilin 

 C,6H60(OMe), 



Herzig u. Pollak, J. Brasilin and 

 Hamatoxylin. M., 27, (744). 



CYCLOIDS CieHieOs 



3,4-Dioxy-4'-isopropylflavonole 

 Kostanecki, St. von. B., 40, (3669). 



7-Oxy-"' : O-diinethoxy-2 : 3-indeno- 

 1 : i-benzopyranol 



,0 C.C6H2(OMe)i! 



CH(0H).C.CH2 

 Hydrocldoride. 

 PerMn, jun. & Robinson. 50478. 



HO.C6H3< 



CYCLOID CisH.sOs 



p-Trimethylgalloylcoumarane- 

 Kostanecki, Lampe u. Marschalk, Ch. 

 B., 40, (3()6UJ. 



CYCLOID C2.H,.0!, 



Oxy-o cresolphthalein 



HO.CeHa^p t'elljile.OH 

 CO.O-^ X'eHjMe.OlI 

 Bentley, Gardner, jun. & Weizmann, 



c. .I.e., 91. (ir.i'tjj. 



CYCLOID C24H,g05 



DinaphthapyiTlmalonic acid 



OCC.oliel^t'lI.CIIiCOjli), 

 Ethyl ester and seminitrile. 

 Fosse. Bl., 35, (1005). 



3 h 2 



