Non-enzymatic pyridine ring formation in the biosynthesis of the rubrolone tropolone alkaloids.
Non-enzymatic pyridine ring formation in the biosynthesis of the rubrolone tropolone alkaloids.
复制标题
鲁布洛酮托酚酮生物碱生物合成中的非酶促吡啶环形成
DOI:
10.1038/ncomms13083
复制
发表时间:
2016-10-07
影响因子:
16.6
通讯作者:
Huang, Sheng-Xiong
中科院分区:
文献类型:
--
作者:
Yan, Yijun;Yang, Jing;Yu, Zhiyin;Yu, Mingming;Ma, Ya-Tuan;Wang, Li;Su, Can;Luo, Jianying;Horsman, Geoffrey P.;Huang, Sheng-Xiong
The pyridine ring is a potent pharmacophore in alkaloid natural products. Nonetheless, its biosynthetic pathways are poorly understood. Rubrolones A and B are tropolone alkaloid natural products possessing a unique tetra-substituted pyridine moiety. Here, we report the gene cluster and propose a biosynthetic pathway for rubrolones, identifying a key intermediate that accumulates upon inactivation of sugar biosynthetic genes. Critically, this intermediate was converted to the aglycones of rubrolones by non-enzymatic condensation and cyclization with either ammonia or anthranilic acid to generate the respective pyridine rings. We propose that this non-enzymatic reaction occurs via hydrolysis of the key intermediate, which possesses a 1,5-dione moiety as an amine acceptor capable of cyclization. This study suggests that 1,5-dione moieties may represent a general strategy for pyridine ring biosynthesis, and more broadly highlights the utility of non-enzymatic diversification for exploring and expanding natural product chemical space.
登录
查看更多内容
影响因子:
2.1
作者:
Henry, GD
通讯作者:
Henry, GD
影响因子:
3.6
作者:
Kelly, TR;Lebedev, RL
通讯作者:
Lebedev, RL
DOI:
10.1046/j.1432-1327.1998.2540347.x
发表时间:
1998-06-01
期刊:
EUROPEAN JOURNAL OF BIOCHEMISTRY
影响因子:
--
作者:
Bruntner, C;Bormann, C
通讯作者:
Bormann, C
影响因子:
15
作者:
Colosimo DA;MacMillan JB
通讯作者:
MacMillan JB
DOI:
10.1073/pnas.0337542100
发表时间:
2003-02-18
影响因子:
11.1
作者:
Gust, B;Challis, GL;Chater, KF
通讯作者:
Chater, KF