Renealtins A and B, New Diarylheptanoids with a Tetrahydrofuran Ring from the Seeds of Renealmia exaltata
摘要:
Two new diarylheptanoids, renealtins A (1) and B (2), have been isolated from the seeds of the Brazilian medicinal plant Renealmia exaltata ("Pacova-catinga", Zingiberaceae), and their structures were elucidated by spectroscopic data. Renealtins A (1) and B (2) are the first example of naturally occurring diarylheptanoids containing a tetrahydrofuran ring.
A short and efficient synthesis of renealtins A and B
摘要:
The total syntheses of the first examples of diarylheptanoid natural products, renealtins A (1) and B (2), isolated from Renealmia exaltata are described, utilizing a delta-lactone intermediate 9. The key reactions involved are asymmetric dihydroxylation and oxy-Michael addition. (C) 2007 Elsevier Ltd. All rights reserved.
An efficient and convenient process is described for the first preparation of a new diarylheptanoid, renealtin A, isolatedfrom the seeds of the Brazilian medicinal plant Renealmia exaltata. The key trisubstituted tetrahydrofuran ring was constructed through Lewis acid mediated stereoselective allylation of the lactol derivative by featuring the elaboration of the functionalized homochiral lactone
描述了从巴西药用植物 Reealmia exaltata 的种子中分离出的一种新的二芳基庚烷类 reealtin A 的首次制备方法,该方法有效且方便。关键的三取代四氢呋喃环是通过路易斯酸介导的内酯衍生物立体选择性烯丙基化构建的,其特征是对 L-酒石酸衍生的功能化同手性内酯进行了精心设计。还建立了其他次要立体异构体肾素 B 的合成。
A short and efficient synthesis of renealtins A and B
作者:Gowravaram Sabitha、K. Yadagiri、J.S. Yadav
DOI:10.1016/j.tetlet.2007.09.025
日期:2007.11
The total syntheses of the first examples of diarylheptanoid natural products, renealtins A (1) and B (2), isolated from Renealmia exaltata are described, utilizing a delta-lactone intermediate 9. The key reactions involved are asymmetric dihydroxylation and oxy-Michael addition. (C) 2007 Elsevier Ltd. All rights reserved.
Renealtins A and B, New Diarylheptanoids with a Tetrahydrofuran Ring from the Seeds of <i>Renealmia exaltata</i>
Two new diarylheptanoids, renealtins A (1) and B (2), have been isolated from the seeds of the Brazilian medicinal plant Renealmia exaltata ("Pacova-catinga", Zingiberaceae), and their structures were elucidated by spectroscopic data. Renealtins A (1) and B (2) are the first example of naturally occurring diarylheptanoids containing a tetrahydrofuran ring.