Pfizer Handbook of Microbial Metabolites 260 



552 Endocrocin, CieHjoOj, copper-red leaflets, m.p. 318° (dec.)- 



O 



HO II CH3 



I II I COOH 

 HO O OH 



Nephromopsis endocrocea Asahina 



Yasuhiko Asahina and Fukuziro Fuzikawa, Ber. 68B 1558 

 (1935). 



Aspergillus amstelodami (Man gin) Thorn and Church. 



Shoji Shibata and Shinsaku Natori, Pharm. Bull. (Tokyo) 1 

 160 (1953). 



553 Clavoxanthin, CieHioOy, yellow needles, m.p. 340° (dec). 



Apparently similar to endocrocin. 



Claviceps purpurea 



B. Franck and T. Reschke, Angew. Chem. 71 407 (1959). 



554 Parietinic Acid, Ci^HioOy, yellow needles, m.p. --'300° (sub- 



limes). 



CH3O II COOH 



Xanthoria parietina (L.) Th. Fr. 



Walter Escherich, Biochem. Z. 330 73 (1958). 



555 Physcion (Partetin), CigHisOg, orange-yellow leaflets, m.p. 207°. 



O 

 CH3O 



Aspergillus glaiicus spp., A. chevalieri, A. ruber 

 (Mangin) Raper and Thom, Penicillium herquei Bainier 

 and Sartory, Xanthoria parietina (L.) Beltram, X. fallax, 

 Teloschistes fiavicans (Sw.) Norm., T. exilis Wainio, 

 Placodium spp., Caloplaca elegans (Link) 



