2198-92-7Relevant articles and documents
Synthesis of verrucarin A and 3α-hydroxyverrucarin A from verrucarol and diacetoxyscripenol (Anguidine)
Mohr,Tori,Grossen,et al.
, p. 1412 - 1417 (1982)
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Total synthesis of (-)-verrucarol
Ishihara, Jun,Nonaka, Rie,Terasawa, Yuki,Shiraki, Ryota,Yabu, Kazuo,Kataoka, Hiromi,Ochiai, Yuichi,Tadano, Kin-Ichi
, p. 2679 - 2688 (2007/10/03)
We have achieved the total synthesis of (-)-verrucarol, a trichothecene sesquiterpenoid obtained as a hydrolysis product of the naturally occurring verrucarin A. Our total synthesis began with the previously reported enantiometrically pure bicyclic α-methylated γ-lactone, which was prepared from D-glucose. The key steps for the total synthesis were (1) aldol-like carbon-carbon bond formation applied to the starting lactone using a four- carbon aldehyde as an electrophile for introduction of the quaternary stereogenic carbon sharing the B and C-rings of the trichothecene skeleton, (2) Dieckmann cyclization of the derived ε-ester lactone for construction of the C-ring equivalent, (3) Barton's decarboxylative oxygenation for conversion of a carboxylic acid functionality in the Dieckmann cyclization product into a hydroxyl group, (4) skeletal enlargement strategy for the crucial trichothecene skeleton construction, and (5) the final stereoselective formation of the exo-epoxy ring at the methylene carbon in the bridge constituting the B and C-rings.
RORIDIN L-2, A NEW TRICHOTHECENE
Bloem, Russell J.,Smitka, Tim A.,Bunge, Richard H.,French, James C.,Mazzola, Eugene P.
, p. 249 - 252 (2007/10/02)
The structure (2) of roridin L-2 is shown to be a C29-trichothecene that lacks the macrocyclic lactone system usually present in the roridins.