R. L. Hartles
Oct 1, 1951
Citations
0
Influential Citations
6
Citations
Journal
The Biochemical journal
Abstract
1. Two hitherto undescribed colouring matters, nalgioven8in and nalgiotaxin, have been isolated from the mycelium of laboratory cultures of Penicillium nalgioven8i8 Laxa. 2. Nalgiovensin, C18HlO68, crystallizes in orange needles or plates, m.p. 199-200. It has been shown to be dextro-4:5-dihydroxy-7-methoxy-2-hydroxypropylanthraquinone in which the nature of the hydroxypropyl group, whether -CHOH. CH2. CH3, -CH2.CHOH . CH3 or -CH(CH3) . CH20H, is at present undetermined. 3. Nalgiolaxin, C18H1506CI, crystallizes in yellow needles or plates, m.p. 248-248 5°. It has been shown to be a monochloroderivative of nalgiovensin and is believed to be dextro-l(or 8)-chloro-4:5dihydroxy 7 methoxy -.2 hydroxypropylanthraquinone. 4. Nalgiolaxin is believed to be the first example of a derivative of anthraquinone containing chlorine which has been recorded from any natural source. 5. Nalgiovensin and nalgiolaxin are both dextrorotatory in chloroform solution and are of unusual interest since optically active, naturally occurring, derivatives of anthraquinone are rare except those which occur as glycosides.