Pfizer Handbook of Microbial Metabolites 



178 



364 epi-Friedelinol, CgoH-.oO, colorless crystals, m.p. 280° (vac), 

 [a]D +23° (c 0.52 in chloroform). 



Cetraria nivalis (L.) Ach. 



Torger Bruun, Acta Chem. Scand. 8 71 (1954). 



365 Zeorin, C:hoH-.202, colorless crystals, m.p. 223-227°, [ajo +54^ 

 (c 0.50 in chloroform). 



366 



Lecanora sordida, L. thiodes, L. epanora, L. sulfiirea, 

 Physcia caesia. Ph. endococcina, Anaptychia speciosa, A. 

 hypoleuca, Parmelia leiicotyliza, Dimelaena oreina, 

 Haematomma coccineum, H. leiphaemum, H. prophyrium, 

 Placodium saxicolum, Peltigera malacea, P. horizontalis , 

 P. propagiilifera. Nephroma arcticum, N. antarcticum, 

 N. laevigatum, N. parile, Cladonia deformis, Coccifera 

 pleurota, C. helUdiflora, Urceolaria cretacea, Lepraria 

 latebrarum 



"Elsevier's Encyclopedia of Organic Chemistry," 14 Suppl., 

 Elsevier Publishing Co., London, 1952, p. 1197S. (Occur- 

 rence) 



D. H. R. Barton and T. Bruun, /. Chem. Soc, 1683 (1952). 



D. H. R. Barton, P. de Mayo and J. C. Orr, ibid., 2239 

 (1958). 



Lcucotylin, C:^„H-,20:^, colorless prisms, m.p. 333°, [a]i.-* +49.43°, 

 A triterpenoid compound accompanying zeorin. 

 Parvielia leiicotyliza Nyl. 

 Yasuhiko Asahina and Hirosi Akagi, Ber. 71B 980 (1938). 



