First Total Synthesis of 3α,4α-Oxidoagarofuran and (-)-3β,4α-Dihydroxy-β-dihydroagarofuran
摘要:
The first stereoselective total synthesis of (-)-3beta, 4alpha-dihydroxy-beta-dihydroagarofuran (1) and 3alpha,4alpha-axidoagarofuran (2) has been described. The key step is the epoxidation of alpha-agarofuran (6) with dimethyldioxirane.
Buagafuran Active Pharmaceutical Ingredient, Preparation Method and Application Thereof
申请人:BEI JING YUAN QI ZHI YAO TECHNOLOGY CO. LTD
公开号:US20190337913A1
公开(公告)日:2019-11-07
A method suitable for large-scale production of buagafuran active pharmaceutical ingredient. A buagafuran active pharmaceutical ingredient (API) with a high purity prepared by the method includes an active ingredient of buagafuran, an impurity A, and an impurity B. In the buagafuran API, a content of the active ingredient of buagafuran is higher than 97.5%, and a total content of the impurity A and the impurity B is less than 0.04%. The buagafuran API can be applied to new drug development processes such as clinical research, pharmaceutical research and quality control research.
Improved Synthesis of (+)-Dehydrobaimuxinol, (-)-Isobaimuxinol and (-)- Baimuxinol from (-)-Carvone
作者:Xin Chen、Sichang Shao、Tongshuang Li、Yulin Li
DOI:10.1055/s-1992-26299
日期:——
An improved synthesis of (+)-dehydrobaimuxinol (1), (-)-isobai- muxinol (2) and (-)-baimuxinol (3) (2-hydroxymethyl-6,10,10-trimethyl -11-oxatricyclo[7.2.1.01.6]dodecanes) has been described starting from (-)-Carvone (p-mentha-6,8-dien-2-one) (4). The key step is the regiospecific allylic oxidation of α-agarofuran (7) by selenium(IV) oxide.
作者:Yonggang Chen、Zhaoming Xiong、Jiong Yang、Yulin Li
DOI:10.1039/a704440b
日期:——
The first totalsynthesis of (–)-baimuxifuranic acid (1) starting from (–)-carvone is described: in our studies a surprising allylic oxidation was found in the oxidation of an α,β-unsaturated aldehyde 5 with silver oxide.
Dyhidro-β-agarofurans natural and synthetic as acetylcholinesterase and COX inhibitors: interaction with the peripheral anionic site (AChE-PAS), and anti-inflammatory potentials
inhibitory activity on the acetylcholinesterase enzyme and on the COX enzymes. Compound 4 emerged as the most potent in the acetylcholinesterase inhibition assay with IC50 17.0 ± 0.016 µM on acetylcholinesterase (AChE). The compounds evaluated were shown to be selective for AChE. The molecular docking, and the propidium displacement assay suggested that the compounds do not bind to the active site of the
A composition including a plurality of particles, wherein the particles include: about 30% to about 95% by weight of a carrier; about 0.1% to about 30% by weight of a perfume; and about 0.00025% to about 30% by weight of a malodor agent; wherein the malodor agent comprises one or more malodor reduction materials having a Blocker Index of less than 3 or a Blocker Index average of 3 to about 0.001; and wherein each of the particles has a mass between about 0.1 mg to about 5 g.