415 



Pyrans and Related Substances 



Penicilliiim sclerotiorum van Beyma, P. multicolor 

 G.M.P.. P. iiuplicatuui Biourgc 



Timothy P. MacCurtin and Joseph Reilly, Biochem. J. 34 

 1419 (1940). (Isolation) 



H. C. Fielding, Alexander Robertson, R. B. Traners and 

 W. B. WhaUey, /. Chem. Soc, 1814 (1958). 



F. M. Dean, J. Staunton and W. B. Whalley, ibid., 3004 

 (1959). (Structure) 



882 Monascin, Co,Ho,;05, yellow crystals, m.p. 142°, [a]v +544°. 



Monasciis rubriginosiis Sato, M. piirpureus Wentii, 

 M. rubropunctatus Sato 



Hidijiro Nishikawa, /. Agr. Chem. Soc. Japan 8 1007 

 (1932). 



H. Solomon and P. Karrer, Helv. Chim. Acta 15 18 (1932). 



883 Rotiorin, C23H04O-,, red needles, m.p. 246° (dec.) (sublimes), 



[cz]d" +5080° (c 0.002 in chloroform). 

 Tentative structure: 



CH0CH3 



Peiiicilliuni sclerotiorum van Beyma 



Eight kilograms of dry mycelium yielded 300-350 g. 

 of sclerotiorin and 100—150 g. of rotiorin. 



G. B. Jackinan, Alexander Robertson, R. B. Traners and 

 W. B. Whalley, /. Chem. Soc, 1825 (1958). (Structure) 



884 Monascorubrin, C03H26O-,, orange crystals, m.p. 134-136°, 

 [alTo,/*" -1500° (c 0.1 in ethanol). 



O CH2CH2CH2CH2CH2CH2CH3 



M 



Monascus purpureus Wentii 



