217 Depsides and Depsidones 



Parmelia cetrata Ach., P. conspersa Ach., P. marmariza 

 Nyl., P. saxatilis Ach., P. abyssinica Kremp. 



Yasuhiko Asahina and Juntaro Asano, Ber. 66B 689, 893, 

 1215 (1933). 



449 Gangaleoidin, C1SH14O7CI2, colorless needles, m.p. 213°. 



^"^ OCH3 



COOCH3 



Lecanora gangaleoides Nyl. 



V. E. Davidson, J. Keane and T. J. Nolan, Sci. Proc. Roy. 

 Dublin Soc. 23 143 (1943). (Structure) 



450 Psoromic Acid (Sulcatic Acid, Parelllc Acid), C18H14O8, colorless 

 needles, m.p. 265°. 



COO 



CHO '^ COOH 



Psoroma crassum Korber, Alectoria zopfii Asahina, etc. 

 Syozi Shibata, /. Pharm.. Soc. Japan 59 323 (in German, 

 111) (1939). (Synthesis) 



451 Protocetraric Acid (Capraric Acid, Ramalinic Acid), C18H14O9, 

 colorless fine needles, m.p. 250° (dec. from 220°). 



CH3 ^^^ CH2OH 

 COO I OH 



CH3 ^°°" 



Parmelia caperata, Ramalina farinacea, etc. 



Yasuhiko Asahina and Yaichiru Tanase, Ber. 66B 700 

 (1933). 



Yasuhiko Asahina and Juntaro Asano, ibid. 66B 893, 1215 

 (1933). 



