Biomimetic Synthesis of Pyrone-Derived Natural Products: Exploring Chemical Pathways from a Unique Polyketide Precursor
作者:Serena J. Eade、Magnus W. Walter、Colin Byrne、Barbara Odell、Raphaël Rodriguez、Jack E. Baldwin、Robert M. Adlington、John E. Moses
DOI:10.1021/jo800220w
日期:2008.7.1
of diverse naturalproducts with complex core structures such as 9,10-deoxytridachione, photodeoxytridachione and ocellapyrone A are derived in nature from a linear and conformationally strained all-(E) tetraene−pyrone precursor. We therefore synthesized such a precursor and investigated its biomimetic transformation under a variety of reaction conditions, both to the above naturalproducts as well as
tautomerization of an acyclic derivative assembled by sequential substrate-controlled stereoselective aldol reactions of a chiral ketone with two achiral aldehydes. Although the trioxaadamantane tautomer was shown to be thermodynamically more stable than alternative forms, the kinetic barrier to cyclization was significant. This observation raises doubts about the proposed formation of muamvatin as an
Pyrrole compound, method of making same, and aroma composition, food, drink and cosmetics containing same
申请人:T. HASEGAWA CO., LTD.
公开号:US11332694B2
公开(公告)日:2022-05-17
A compound represented by the following formula (1):
wherein, R1 is a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyl group; and R2 is a 1-pyrrolyl group, a 2-pyrrolyl group, or a 3-pyrrolyl group. The present invention can provide a means highly effective in contributing to savory roasting flavor and capable of imparting fragrance with natural feeling.