12. QUINONES: STRUCTURE AND DISTRIBUTION
Anthraquinones
in the
Rubiaceae
a
637
Alizarin
(VIII)
Lucidin (R=H)
Damnacanthol (R=Me)
Xanthopurpurin
(X)
Damnacanthal (R=Me)
Nordamnacanthal (R=H) b
Rubiadin
(XI)
Munj istin
(XIV)
Anthragallol
(XV)
Purpur in
(XVI)
Pseudopurpurin
(XVII)
(continued)
(VI)
(VII)
(DC)
(XII)
(XIII)