keyword
MENU ▼
Read by QxMD icon Read
search

Tertiary indanol

keyword
https://www.readbyqxmd.com/read/25069403/synthesis-of-1-indanols-and-1-indanamines-by-intramolecular-palladium-0-catalyzed-c-sp3-h-arylation-impact-of-conformational-effects
#1
Simon Janody, Rodolphe Jazzar, Arnaud Comte, Philipp M Holstein, Jean-Pierre Vors, Mark J Ford, Olivier Baudoin
A range of valuable 1-indanols and 1-indanamines containing a tertiary C1 atom were synthesized by intramolecular palladium(0)-catalyzed C(sp(3))-H arylation, despite unfavorable steric interactions. The efficiency of the reaction was found to correlate with the degree of substitution at C2, as expected from the Thorpe-Ingold effect. Additionally, the nature of the heteroatomic substituent at C1 had a marked influence on the diastereoselectivity at C1 and C2; indeed, 1-indanols and 1-indanamines were obtained with the opposite relative configuration...
August 25, 2014: Chemistry: a European Journal
https://www.readbyqxmd.com/read/21495732/amino-indanol-catalyzed-asymmetric-michael-additions-of-oxindoles-to-protected-2-amino-1-nitroethenes-for-the-synthesis-of-3-3-disubstituted-oxindoles-bearing-%C3%AE-%C3%AE-diamino-functionality
#2
Xiong-Li Liu, Zhi-Jun Wu, Xi-Lin Du, Xiao-Mei Zhang, Wei-Cheng Yuan
An organocatalytic asymmetric Michael addition reaction of 3-substituted oxindoles to protected 2-amino-1-nitroethenes has been developed. The reaction is catalyzed by a simple and readily available amino-indanol derivative and affords the desired products in very high yields (up to 99%) with excellent diastereoselectivities (up to >99:1) and very good enantioselectivities (up to 90%). Significantly, this study provides a general catalytic method for the construction of 3,3'-disubstituted oxindoles bearing α,β-diamino functionality as well as vicinal chiral quaternary/tertiary stereocenters...
May 20, 2011: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/19586907/structural-and-inhibition-analysis-reveals-the-mechanism-of-selectivity-of-a-series-of-aggrecanase-inhibitors
#3
COMPARATIVE STUDY
Micky D Tortorella, Alfredo G Tomasselli, Karl J Mathis, Mark E Schnute, Scott S Woodard, Grace Munie, Jennifer M Williams, Nicole Caspers, Arthur J Wittwer, Anne-Marie Malfait, Huey-Sheng Shieh
Several inhibitors of a series of cis-1(S)2(R)-amino-2-indanol-based compounds were reported to be selective for the aggrecanases, ADAMTS-4 and -5 over other metalloproteases. To understand the nature of this selectivity for aggrecanases, the inhibitors, along with the broad spectrum metalloprotease inhibitor marimastat, were independently bound to the catalytic domain of ADAMTS-5, and the corresponding crystal structures were determined. By comparing the structures, it was determined that the specificity of the relative inhibitors for ADAMTS-5 was not driven by a specific interaction, such as zinc chelation, hydrogen bonding, or charge interactions, but rather by subtle and indirect factors, such as water bridging, ring rigidity, pocket size, and shape, as well as protein conformation flexibility...
September 4, 2009: Journal of Biological Chemistry
1
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"