Selective methylation of kaempferol via benzylation and deacetylation of kaempferol acetates.

Selective methylation of kaempferol via benzylation and deacetylation of kaempferol acetates.
复制标题

通过山奈酚乙酸酯的苄基化和脱乙酰化选择性甲基化山奈酚

DOI:
10.3762/bjoc.11.33
复制
发表时间:
2015
影响因子:
2.7
通讯作者:
Zhang G
Zhang G
中科院分区:
化学4区
文献类型:
--
作者:
Mei Q;Wang C;Yuan W;Zhang G

文献摘要

参考文献

被引文献

相似文献

基于山萘酚乙酸酯的选择性苄基化和可控脱乙酰化反应,提出了一种山萘酚单、二、三O-甲基化的合成方法。通过选择性脱乙酰和苄基化反应,分别得到3,4 ′,5,-三-O-乙酰基山奈酚(2)和7-O-苄基-3,4 ′,5,-三-O-乙酰基山奈酚(8)。以山萘酚为原料,通过可控脱乙酰化反应,选择性或直接甲基化,合成了8种O-甲基化山萘酚,总收率为51-77%。
A strategy for selective mono-, di- and tri-O-methylation of kaempferol, predominantly on the basis of selective benzylation and controllable deacetylation of kaempferol acetates, was developed. From the selective deacetylation and benzylation of kaempferol tetraacetate (1), 3,4′,5,-tri-O-acetylkaempferol (2) and 7-O-benzyl-3,4′5,-tri-O-acetylkaempferol (8) were obtained, respectively. By controllable deacetylation and followed selective or direct methylation of these two intermediates, eight O-methylated kaempferols were prepared with 51–77% total yields from kaempferol.
DOI: 10.1055/s-0033-1338559
发表时间: 2014-01-01
影响因子: 2.6
作者:
Kawamura, Tomoyuki;Hayashi, Moemi;Nemoto, Hisao
通讯作者: Nemoto, Hisao
DOI: 10.1021/jm00106a039
发表时间: 1991-02-01
影响因子: 7.3
作者:
DEMEYER, N;HAEMERS, A;VLIETINCK, AJ
通讯作者: VLIETINCK, AJ
DOI: 10.1021/jf052900a
发表时间: 2006-04-19
影响因子: 6.1
作者:
Park, JS;Rho, HS;Chang, IS
通讯作者: Chang, IS
DOI: 10.1007/s003940050054
发表时间: 1999-06-01
影响因子: 5
作者:
Kuntz, S;Wenzel, U;Daniel, H
通讯作者: Daniel, H
DOI: 10.1007/s12272-011-0808-6
发表时间: 2011-08-01
影响因子: 6.7
作者:
Park, Cheol Hyeong;Kim, Ki Hyun;Lee, Kang Ro
通讯作者: Lee, Kang Ro