In:
Liebigs Annalen der Chemie, Wiley, Vol. 1989, No. 8 ( 1989-08-14), p. 803-810
Abstract:
Fungal Pigments, 61. – Flavomentins and Spiromentins, Novel Terphenylquinone Derivatives from Paxillus atrotomentosus and P. panuoides (Boletales) The gilled toadstools Paxillus atrotomentosus and P. panuoides produce small amounts of orange‐yellow flavomentins and violet spiromentins. The flavomentins 1–3 constitute mono‐ and diesters of atromentin ( 6 ) with (2 Z ,4 E )‐2,4‐hexadienoic acid or (2 Z ,4 S ,5 S )‐4,5‐epoxy‐2‐hexenoic acid. In addition, 3‐ O ‐acetylatromentin ( 4 ) has been isolated from P. atrotomentosu . The spiromentins 8,11,12 , and 13 possess a unique spiro structure in which a 4,5‐dihydroxy‐1,2‐benzoquinone is linked to a lactone acetal unit. The structures of the pigments were confirmed by the synthesis of model compounds and the biomimetic conversion of flavomentin B ( 2 ) into the spiromentins B ( 11 ) and C ( 12 ).
Type of Medium:
Online Resource
ISSN:
0170-2041
DOI:
10.1002/jlac.v1989:8
DOI:
10.1002/jlac.198919890228
Language:
English
Publisher:
Wiley
Publication Date:
1989
detail.hit.zdb_id:
1475010-7
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