Synthesis of diarylheptanoids and assessment of their pungency.
作者:HIDEJI ITOKAWA、RITSUO AIYAMA、AKIRA IKUTA
DOI:10.1248/cpb.31.2491
日期:——
With the aim of correlating pungency with substituent groups on one benzene ring, various analogues of yakuchinones were synthesized by means of the Claisen-Schmidt reaction. Their pungencies were assessed by direct comparison of the threshold concentrations obtained in taste experiments. The presence of a phenolic hydroxyl group was indispensable for high pungency, while that of a 1, 2-double bond of the heptanone part tended to decrease the pungency.
Concise and efficient total synthesis of oxyphyllacinol, yakuchione-A and yakuchione-B
作者:Xiang Shi、Yu Deng、Nicole C. Kurtz、Yue Sun、Mingxing Xue、Xian Wu
DOI:10.1080/00397911.2022.2034882
日期:2022.2.16
Abstract A concise and efficient method for the large-scale totalsynthesis of oxyphyllacinol (1) has been achieved in six steps with an overall yield of 46%. Simultaneously, yakuchione-A (11) was obtained in a satisfactory yield (52%) during the process. By employing a Weinreb amide (6) as the key masonry block, yakuchione-B (13) was also constructed in a great overall yield (56%) and high purity