Results 31 to 40 of about 25,151 (288)

4,8,11,15-Tetramethyl-1,3,8,11,16,17-hexaazatricyclo[11.2.1.13,6]heptadeca-4,6(17), 13(16), 14-tetraene

open access: yesMolbank, 2003
n ...
Sghir El Kadiri   +3 more
doaj   +1 more source

Structural Features and Binding Modes of Thioether-Cyclized Peptide Ligands

open access: yesBiomedicines, 2018
Macrocyclic peptides are an emerging class of bioactive compounds for therapeutic use. In part, this is because they are capable of high potency and excellent target affinity and selectivity. Over the last decade, several biochemical techniques have been
Manuel E. Otero-Ramirez   +2 more
doaj   +1 more source

Enantioselective Liquid Chromatographic Separations Using Macrocyclic Glycopeptide-Based Chiral Selectors

open access: yesMolecules, 2021
Numerous chemical compounds of high practical importance, such as drugs, fertilizers, and food additives are being commercialized as racemic mixtures, although in most cases only one of the isomers possesses the desirable properties. As our understanding
Róbert Berkecz   +3 more
doaj   +1 more source

Lower-rim ferrocenyl substituted calixarenes: new electrochemical sensors for anions

open access: yes, 1998
New ferrocene substituted calix[4 and 5]arenes have been prepared and the crystal structure of a lower-rim substituted bis ferrocene calix[4]arene (7) has been elucidated. The respective ferrocene/ferrocenium redox-couples of compounds 6 (a calix[4]arene
Drew, MGB   +9 more
core   +1 more source

Synthesis of functionalized macrocyclic derivatives of trioxabicyclo[3.3.0]nonadiene

open access: yesBeilstein Journal of Organic Chemistry, 2012
C72-Macrocyclic systems functionalized with nitroaryl and arylamino groups were synthesized from the bisdioxine diacid dichloride 1,3,5,7-tetra-tert-butyl-2,6,9-trioxabicyclo[3.3.1]nona-3,7-diene-4,8-dicarbonyl dichloride (3).
Sabine Leber, Gert Kollenz, Curt Wentrup
doaj   +1 more source

Cyclic and Macrocyclic Organic Compounds - a Personal Review in Honor of Professor Leopold Ružička [PDF]

open access: yesKemija u Industriji, 2009
Ružička opened the field of cyclic molecules such as cyclic terpenes and cyclic ketones with up to 17 ring atoms. This work until now was extended in many directions such as cyclic paraffins, crown ethers and cryptands and cyclic ester amides.
Höcker¸, H.
doaj  

Recent Advances on Macrocyclic Trichothecenes, Their Bioactivities and Biosynthetic Pathway

open access: yesToxins, 2020
Macrocyclic trichothecenes are an important group of trichothecenes bearing a large ring. Despite the fact that many of trichothecenes are of concern in agriculture, food contamination, health care and building protection, the macrocyclic ones are ...
Muzi Zhu   +4 more
doaj   +1 more source

Synthetic macrocyclic Ionophores [PDF]

open access: yes, 1989
14-Crown-4 derivatives bearing either one or two oxymethyl, benzyl- oxymethyl, methoxycarbonylmethyl or carbamoylmethyl substituents have been prepared in an attempt to obtain selective ionophores for lithiumions. Complexation has been monitored by IR,
Nicholson, Patrick Edmund
core  

Long‐Range Coordination Environment Modulates Single‐Atom Local States and Systemic Impact on CO2 Photoconversion

open access: yesAdvanced Functional Materials, EarlyView.
Terminal groups on Cu porphyrins modulate the electronic states of single‐atom Cu centers through a long‐range electronic effect, without altering the Cu coordination geometry. Meanwhile, a multi‐descriptor framework is established that incorporates porphyrin regulation, hybrid catalyst properties, and CO2 photoreduction capabilities.
Yi Zhang   +13 more
wiley   +1 more source

Macrocyclic compounds derived from Perfluoro-4-isopropylpyridine [PDF]

open access: yes, 2001
PerflLioro-4-isopropylpyridine (1) has been shown to undergo nucleophilic substitution reactions with wide range of nucleophiles and was thus demonstrated to behave as a powerful regioselective electrophile in most cases.(INSERT DIAGRAM) This work has ...
Richmond, Paul
core  

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