Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 850140-73-7, Name is Afatinib dimaleate, molecular formula is C32H33ClFN5O11. In an article, author is Xie Tian-Zhen,once mentioned of 850140-73-7, Name: Afatinib dimaleate.
Seven new monoterpenoid indole alkaloids, kopsiofficines A similar to G, together with twenty known alkaloids, were isolated from the stems of Kopsia officinalis. Their structures were elucidated on the basis of extensive spectroscopic methods. The anti-inflammatory activities of all alkaloids were evaluated on lipopolysaccharide (LPS)-stimulated RAW 264.7 cells by the inhibiting the production of IL-1 beta, PGE2 and TNF-alpha. Among them, kopsiofficines A (1), kopsiofficines B (2), kopsiofficines D (4), kopsiofficines F (6), kopsiofficines G (7), 12-methoxykopsine (11), kopsinoline (15), (-)-N-methoxycarbonyl-11,12-methylenedioxykopsinaline (16), kopsinine (18) and kopsinic acid (20) exhibited significant anti-inflammatory activity, which were comparable to that of dexamethasone. The results supposed that the acetonyl group at C-5 of monoterpenoid indole alkaloids play an important role in their anti-inflammatory activity.
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Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles