Total Synthesis of Chiral Falcarindiol Analogues Using BINOL-Promoted Alkyne Addition to Aldehydes
作者:Li Wang、Ping-Ping Shou、Si-Ping Wei、Chun Zhang、Shuang-Xun Li、Ping-Xian Liu、Xi Du、Qin Wang
DOI:10.3390/molecules21010112
日期:——
An enantioselective total synthesis of chiral falcarindiol analogues from buta-1,3-diyn-1-yltriisopropylsilane is reported. The key step in this synthesis is BINOL-promoted asymmetric diacetylene addition to aldehydes. The two chiral centers of the falcarindiol analogues can be produced by using the same kind of catalyst with high selectivity, and the final product can be obtained in only six steps
Enantioselective ProPhenol-Catalyzed Addition of 1,3-Diynes to Aldehydes to Generate Synthetically Versatile Building Blocks and Diyne Natural Products
作者:Barry M. Trost、Vincent S. Chan、Daisuke Yamamoto
DOI:10.1021/ja910656b
日期:2010.4.14
and saturated aldehydes, of which the latter were previously limited in alkynyl zinc additions. The chiral diynol products are also versatile building blocks that can be readily elaborated; this was illustrated through highly selective trans-hydrosilylations, which enabled the synthesis of a beta-hydroxyketone and enyne. Additionally, the development of this method allowed for the rapid total syntheses
Synthesis and Biological Evaluation of Falcarinol-Type Analogues as Potential Calcium Channel Blockers
作者:Yang Li、Wan-Li Tan、Kai Guo、Xiao-Wei Gao、Jun Wei、Dong Yi、Chun Zhang、Qin Wang
DOI:10.1021/acs.jnatprod.1c00136
日期:2021.8.27
channel-blocking activity, as recorded using a manual patch clamp technique on HEK-293 cells stably expressing hCav1.2 (α1C/β2a/α2δ1). These findings suggest that the mechanism of the L-type calcium channel-blocking activity of falcarinol (1a) and its analogue (R)-2i might be involved in neuroprotection by falcarinol-type analogues by inhibiting calcium overload in the upstream of the signaling pathway.
使用基于手性 1,1'-联萘-2-醇 (BINOL) 的催化系统合成了一系列镰刀菌醇类似物 ( 2 )的对映异构体。研究了镰刀菌素 ( 1a ) 及其类似物 ( 2 ) 对叠氮化钠 (NaN 3 )损伤的 PC12 细胞的神经保护作用。研究了结构-功能关系和可能的机制。在加入 NaN 3并在 CO 2 中培养后,用镰刀菌素类似物 ( R )- 2d和 ( R )- 2i预处理 PC12 细胞1 小时培养 24 小时导致细胞活力显着提高,如 CCK-8 测定和 Hoechst 染色所确定,与 LDH 释放和 MDA 含量减少、SOD 活性增加和 ROS 应激降低相比,与天然镰刀菌素 ( 1a )。这些观察结果表明,镰刀菌素类似物 ( R )- 2d和 ( R )- 2i可以通过增加对氧化应激的抵抗力来保护 PC12 细胞免受 NaN 3诱导的细胞凋亡。第一次,falcarinol ( 1a )