A new naphthoquinone from Pyrola japonica.
A new naphthoquinone, 5,8-dihydro-2,7-dimethyl-[1,4]naphthoquinone (1), which was named 5,8-dihydrochimaphilin, isolated from an ethyl acetate soluble fraction from the root of Pyrola japonica, together with chimaphilin (2). Compound 1 was transformed rapidly to 2 upon exposure to air by HPLC analysis. This fact supported that chimaphilin (2) may be an artifact from 1.
Lee
S
S
Korea Research Institute of Bioscience and Biotechnology, Taejon.
An
R
R
Min
B
B
Na
M
M
Lee
C
C
Kang
S
S
Maeng
H
H
Bae
K
K
D000972:Antineoplastic Agents, Phytogenic / Q000302:isolation & purification*; D009285:Naphthoquinones / Q000737:chemistry / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*
C457231:5,8-dihydrochimaphilin; D000972:Antineoplastic Agents, Phytogenic; D009285:Naphthoquinones; C057774:chimaphilin