Pfizer Handbook of Microbial Metabolites 



32 



37 6-O-Acetylglucose, C8H14O7, minute colorless prisms, m.p, 133°, 



[(x]d^° +48° (c 4.0 in water at equilibrium). 



CHO 



I 

 HCOH 



1 

 HOCH 



HCOH 



I 

 HCOH 



I 

 CH2OCOCH3 



Bacillus megaterium 



R. B. Dufe, D. M. Webley and V. C. Farmer, Nature 179 

 103 (1957). 



38 D-Mannopyranosyl-1-meso-erythritol, C10H20O9, colorless crystals, 



m.p. 160°, [a]v -36.7°. 



CH2OH 



-CH2 



-CH— CH— CH2 



1 I I 

 OH OH OH 



Ustilago sp. 



Besides this water-soluble compound the fungus pro- 

 duces 15 g. per liter of an oil, consisting of a mixture of 

 fatty acid esters of o-mannopyranosyl-l-meso-erythritol. 



B. Boothroyd, J. A. Thorn and R. H. Haskins, Can. J. 

 Biochem. and Physiol. 34 10 (1956). 



39 Umbilicin (3-yg-D-Galactopyranosido-D-arabitol), C11H22O10, color- 

 less crystals, m.p. 138°, [a]D"° —81° (c 2 in water). 



CH2OH 



HOCH 



I 

 HC— 



-0— CH 



HCOH HCOH 



I I 



CH2OH HOCH 



I 

 HOCH 



I 

 HC 



CH,OH 



