NIS - libdoc.who.int - World Health Organization

Herba Hyperici
Major chemical constituents
The major characteristic constituents include 0.05–0.30% naphthodianthrones
(hypericin, pseudohypericin, hyperforin, adhyperforin); 2–4%
flavonoids (hyperoside, quercitrin, isoquercitrin, rutin); and 7–15% catechin
tannins (2, 4, 7, 17). The structures of the representative constituents
are presented below.
hypericin R = H
pseud o h y per i c i n R = OH
h y per f o r i n
R = H
ad h y per f o r i n R = CH 3
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