Pfizer Handbook of Microbial Metabolites 288 



O. Hesse, J. prakt. Chem. 170 334 (1900). 



630 Calycin, CisHjoOg, orange-red crystals, m.p. 244°. 



o c=o 



^-cJ-c=c-Q) 

 \ c — -o 



OH,| 



o 



Lepraria candelaris Schaer., Sticta aurata Ach. and 

 Sticta crocata Ach. 



Mitizo Asano and Yukio Kameda, Ber. 68 1568 (1935). 



631 Vulpinic Acid, C19H14O5, yellow crystals, m.p. 148°. 



COOCH3 



0-kc-c=c-Q) 



I OH I 



o c=o 



Evernia vul-pina L., Cyphelium chrysocephalum Ach., 

 Calicium chlorinum Korper, Cetraria juniperina Fr. var. 

 tubulosa Schaer and Cetraria pinastri (Scop.) 



P. Karrer, K. A. Gehrckens and W. Heuss, Helv. Chim. Acta 

 9 446 (1926). (Structure) 



632 Pinastric Acid ( Chry socetraric Acid), CooHigOe, orange needles, 



m.p. 200-203°. 



OH COOCH3 



_ CH3O— /^^c=c— c=c— ^^> 

 o=c o 



Lepraria fiava (Schreber. ) f. quercina, Cetraria pinastri 

 (Scop.), Cetraria tubulosa (Schreb.), Cetraria juniperina 

 L. (Ach.) 



Mitizo Asano and Yukio Kameda, Ber. 68 1565 (1935). 

 (Structure) 



633 Leprapic Acid (Leprapinic Acid, Methyl 2-Methoxypulvlnate ) , 



CsoHieOg, golden plates, m.p. 159°. 



COOCH3 OH 



\^ o — c=o 

 OCH3 



