| Abstract
| - Three new naphthoquinone pigments, 6,7-dimethoxydihydrolindbladione (1), dihydrolindbladione (2), and6-methoxydihydrolindbladione (3), have been isolated from a myxomycete Lindbladia tubulina, and theirstructures were elucidated by spectral data. Compound 3 appreciably exhibited a reversal effect ofmultidrug resistance. Lindbladione (4), the major pigment of this myxomycete, was also isolated fromCribraria intricata.
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