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Pyrone ring Dihydropyrone

Inhibitor studies with LS 80707 and its isomer LS 80717 (containing JS-groups at C-5 and C-6 of the pyrone ring) have revealed that LS 80717 does not inhibit -carotene desaturase at the same concentration as LS 80707. Another dihydropyrone, LS 780091, binds irreversibly and non-competitively at the active site of the enzyme. ... [Pg.114]

The reactivity of the 1,4-dioxocin ring toward potential dienophiles (e.g. triazolinediones) has apparently not been explored. The carbaldehyde side chain of 1,4-dioxocin (132 R = CHO) behaves as a dienophile toward l-methoxy-3-trimethylsiloxy-1,3-butadiene, affording dihydropyrone (152) in 25% yield (Scheme 40) oxidation of (152) affords a low yield (5%) of the corresponing pyrone (128) <84AG(E)966>. [Pg.572]

See other pages where Pyrone ring Dihydropyrone is mentioned: [Pg.65]    [Pg.333]    [Pg.52]    [Pg.60]    [Pg.68]    [Pg.638]    [Pg.289]    [Pg.303]    [Pg.227]    [Pg.277]    [Pg.69]    [Pg.312]    [Pg.459]    [Pg.56]    [Pg.174]   
See also in sourсe #XX -- [ Pg.459 ]



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2-pyrone rings

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