Dechlorodauricumine from cultured roots of Menispermum dauricum
摘要:
Dechlorodauricumine, a possible organic substrate for biochlorination, was isolated from cultured roots of Menispermum dauricum, a rich source of chlorinated alkaloids. Its structure was established by spectroscopic and chemical methods. (c) 2005 Elsevier Ltd. All rights reserved.
SINOMENINE DERIVATIVES, SYNTHETIC METHODS AND USES THEREOF
申请人:Yao Zhujun
公开号:US20120308589A1
公开(公告)日:2012-12-06
The invention relates to sinomenine derivatives, methods for their synthesis and their applications. The sinomenine derivatives include oxidation derivatives, and C-10 substituted sinomenine derivatives. Based on the readily oxidizable phenol group on sinomenine structure, using oxidation, oxidative dearomatization, or conjugated addition aromatization, one can introduce C-10 substitutions to synthesize the sinomenine derivatives. The sinomenine derivatives of the invention have the following structures:
Using in vitro TNF-α inhibition assay, the activities of the synthetic compounds are assessed. Results from these assays shown that most compounds have anti-inflammatory effects, and some compounds have better activities than that of sinomenine. These compounds may be used in treating immune diseases such as rheumatoid arthritis (RA).
of the total synthesis of the tetracyclic alkaloid (−)-acutumine is presented. A first-generation approach to the spirocyclic subunit was unsuccessful as a result of incorrect regioselectivity in a radical cyclization. However, this work spawned a second-generation strategy in which the spirocycle was fashioned via a radical−polar crossover reaction. This process merged an intramolecular radical conjugate
Acutumine and acutumine compounds synthesis and use
申请人:Qin Guo-Wei
公开号:US20060167076A1
公开(公告)日:2006-07-27
The invention relates to acutumine and compounds thereof and also to compounds of formula (I):
wherein
R
1
and R
2
each represent hydrogen or together form an additional bond,
R
3
represents hydrogen or alkoxy,
R
5
represents hydrogen or chlorine,
R
6
represents hydrogen or alkyl, alkylcarbonyl or aroyl,
R
7
and R
10
each represent alkoxy,
R
10
represents alkoxy,
R
4
, R
8
, R
9
, R
11
, R
12
, R
13
and R
14
are as defined in the description. and medicinal products containing the same which are useful in treating deficiencies of memory.
本发明涉及乌头胺及其化合物,还涉及式 (I) 化合物:
其中
R
1
和 R
2
各自代表氢或共同形成一个附加键、
R
3
代表氢或烷氧基、
R
5
代表氢或氯、
R
6
代表氢或烷基、烷基羰基或芳基、
R
7
和 R
10
各自代表烷氧基、
R
10
代表烷氧基、
R
4
, R
8
, R
9
, R
11
, R
12
, R
13
和 R
14
以及含有这些成分的可用于治疗记忆力缺陷的药物产品。
[EN] COMPOSITIONS AND METHODS FOR MODULAR CONTROL OF BIOORTHOGONAL LIGATION<br/>[FR] COMPOSITIONS ET PROCÉDÉS POUR LE CONTRÔLE MODULAIRE D'UNE LIGATURE BIO-ORTHOGONALE
申请人:UNIV NEW YORK STATE RES FOUND
公开号:WO2020113077A9
公开(公告)日:2020-08-13
Li, Fang; Tartakoff, Samuel S.; Castle, Steven L., Journal of the American Chemical Society, 2009, vol. 131, p. 6674 - 6675
作者:Li, Fang、Tartakoff, Samuel S.、Castle, Steven L.