The homocamptothecin (hCPT) represents a new class of topoisomerase inhibitor which combines enhanced plasma stability and strong antitumor activity. Fluorine imparts desirable characteristics to drugs by modulating both the pharmacokinetics and pharmacodynamic properties of a drug. Therefore, in an attempt to improve the antitumor activity of homocamptothecins, seven new 7-trifluoromethylated homocamptothecin
The present invention comprises compounds of Formula I.
wherein:
R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
, R
8
, and R
9
are defined in the specification.
The invention also comprises a method of treating or ameliorating a syndrome, disorder or disease, wherein said syndrome, disorder or disease is rheumatoid arthritis or psoriasis. The invention also comprises a method of modulating RORγt activity in a mammal by administration of a therapeutically effective amount of at least one compound of claim
1.
Design and Atroposelective Construction of IAN analogues by Organocatalytic Asymmetric Heteroannulation of Alkynes
作者:Lei Zhang、Jiahua Shen、San Wu、Guofu Zhong、Yong‐Bin Wang、Bin Tan
DOI:10.1002/anie.202010598
日期:2020.12.14
atroposelective strategy for accessing enantioenriched axially chiral IAN analogues was developed for the first time. A class of novel atropisomeric C2‐arylquinoline skeletons were synthesized with high enantiocontrol via chiral phosphoric‐acid‐catalyzed heteroannulation of in situ generated vinylidene ortho‐quinone methide (VQM) intermediates with ortho‐aminophenones. The strategy tolerated a broad
Selective Metal-Controlled Synthesis of Trifluoromethylated (Indolin-2-ylidene)methyl- and Quinolin-3-ylphosphonates
作者:Alexander Yu. Mitrofanov、Valentina A. Bychkova、Sergey E. Nefedov、Irina P. Beletskaya
DOI:10.1021/acs.joc.0c00913
日期:2020.11.20
Metal-catalyzed (Cu, Ag, Au) reactions of alkynylphosphonates with 1-(2-aminophenyl)-2,2,2-trifluoroethan-1-ones were developed. Terminal alkyne diethyl ethynylphosphonate reacted with ketones to give different products depending on the catalyst used. With a CuI/PPh3 catalytic system, the formation of CF3-containing indoline derivatives was observed with good yields. The use of AgSbF6 as a catalyst
Phosphine-Catalyzed [3+2] or [4+2] Cycloaddition/S<sub>N</sub>
2 Substitution Domino Reaction of <i>ortho</i>
-Aminotrifluoroaceto- phenone Derivatives with Hex-3-yn-2-one: Preparation of Functionalized 1-Benzazepine Compounds
作者:Yao-Liang Sun、Yin Wei、Min Shi
DOI:10.1002/adsc.201700778
日期:2017.9.18
In this paper, we disclose a novel strategy for the phosphine‐catalyzed cycloaddition/SN2 substitution domino reaction, giving functionalized O‐bridged benzoazepine and benzoxazepine derivatives in moderate to good yields. Changing the N–H protecting group of ortho‐aminotrifluoroacetophenone derivatives gave different bridged‐ring products in one step.
在本文中,我们公开了膦催化的环加成/ S N 2取代多米诺反应的新策略,使官能化的O桥苯并a庚因和苯并x并庚因衍生物具有中等至良好的收率。一步改变邻氨基三氟苯乙酮衍生物的NH保护基,就可以得到不同的桥环产物。