32 CHEMICAL CONSTITUTION IV 



CH, CH, CH3 CH3 



\V • \V 



C CH3 CH3 CH3 CH3 c 



CHj C-CH=CH-C=CHCH=CH-C=CHCH=CHCH=C-CH=CHCH=C-CH=CH-CH CH 



HOCH C-CH3 H3C-C CHj 



\ / Rubixanthin \\ / 



CH, CH„ 



CH3 CH3 



\V 



C CH3 CH3 



CH2 C=^CH CH3 CH3 CH3 CH3 C 



HOCH C CH-C=CHCH=CH-C=CHCH=CHCH=C-CH=CHCH=C-CH=CH-CH CH 



HsC-C CH2 

 Rubichrome \^ / 



CH, 



CH3 CH3 CH3 CH3 



\/ \/ 



C CH, CH, CH3 CH3 C 



/\ I I I I /\ 

 CH2 C-CH=CH-C=CHCH=CH-C=CHCH = CHCH = C-CH=CHCH = C-CH = CH-C CHj 



CH2 C-CHa HjC-C CHOH 



\ / Cryptoxanthin \ / 



CH, CHj 



CH3 CH3 CH3 CH3 



\/ \/ 



C CH3 CH3 CH3 CH3 CH 



/\ II I I \ 

 CHj C-CH=CH-C=CHCH=CH-C=CHCH=CHCH=C-CH=CHCH=C-CH=CH-CH CH 



CH, C-CHg HgC-C CH 



Myxoxanthin \ y/ 



CH, CO 



CH3 CH3 CH3 CH3 



C CH3 CH3 CH3 CH3 C 



/\ II II /\ 

 CH, C-CH=CH-C=CHCH=CH-C=CHCH=CHCH=C-CH = CHCH=C-CH=CH-C CH^ 



I 1 II I 



CH, C-CHj H3C-C CO 



Aphanin(?) \^y^ 



CH, CHa 



