Results 21 to 30 of about 35,698 (262)
Molecules, 2018 In order to find a simple, generic, efficient separation method for 25R/S-spirostanol saponin diastereomers, the liquid chromatographic retention behaviors of C12 carbonylation and C12 unsubstituted 25R/S-spirostanol saponin diastereomers on different ...
Lu Qu +7 more
doaj +1 more source
Thiol-reactive analogues of galanthamine, codeine and morphine as potential probes to interrogate allosteric binding within nAChRs [PDF]
, 2016 Alkaloids including galanthamine (1) and codeine (2) are reported to be positive allosteric modulators of nicotinic acetylcholine receptors (nAChRs) but the binding sites responsible for this activity are not known with certainty.
Balle, Thomas +3 more
core +1 more source
Molecules, 2018 In the present study, we developed a green epoxidation approach for the synthesis of the diastereomers of (−)-isopulegol benzyl ether epoxide using molecular oxygen as the oxidant and a hybrid manganese(III)-porphyrin magnetic reusable ...
Lucas D. Dias +7 more
doaj +1 more source
The Living ROMP of trans-Cyclooctene [PDF]
, 2009 The living ring-opening metathesis polymerization (ROMP) of trans-cyclooctene (tCO) was investigated. ROMP of tCO in the presence of PPh_3 in THF leads to the formation of narrowly dispersed polycyclooctene (PCO).
Conrad, Rosemary M. +2 more
core +2 more sources
Angewandte Chemie, EarlyView.1,2‐Bisborylalkanes are valuable intermediates for chemical synthesis as they could serve as a platform to generate value‐added products with two distinct functional groups at vicinal positions. A novel strategy to synthesize 1,2‐bisborylalkanes via Fe ligand‐to‐metal charge transfer (LMCT) photocatalysis is developed.
Zheye Zhang +5 more
wiley +2 more sources
Molecules, 2016 To obtain enantiopure compounds, the so-called chiral high performance liquid chromatography (HPLC) method, i.e., HPLC using a chiral stationary phase, is very useful, as reviewed in the present Special Issue.
Nobuyuki Harada
doaj +1 more source
Controlling the Morphology of Aggregates of an Amphiphilic Synthetic Receptor through Host-Guest Interactions [PDF]
, 2006 A new amphiphilic receptor containing a macrocyclic anionic headgroup and a single alkyl chain was prepared through an efficient templated synthesis. The interdependence of the aggregation behavior and the host-guest chemistry was studied. In the absence
Chhabra, Anjali, +6 more
core +2 more sources
Diastereomers of 5-S-cysteinyldopa
Acta Dermato-Venereologica, 1983 Diastereomers of 5-S-cysteinyldopa formed from D-dopa and L-cysteine or from L-dopa and D-cysteine can be separated from 5-S-cysteinyldopa formed from L-dopa and L-cysteine by liquid chromatography. The diastereomers have a great potential as internal standards in the analysis of 5-S-cysteinyldopa.
G, Agrup +3 more
openaire +2 more sources
Sulfur‐Directed Construction of Vinyl Cyclopropanes from 1,3‐Dienes
Angewandte Chemie, EarlyView.Sulfur takes control. A pending thioether acts as a molecular compass, directing carbene addition to the 1,3‐diene scaffold with exceptional regio‑ and diastereocontrol to forge sulfur‐substituted vinyl cyclopropanes (S‐VCPs) — molecular architectures inaccessible via conventional cyclopropanation strategies.
Anna Keimer +6 more
wiley +2 more sources
Beilstein Journal of Organic Chemistry, 2019 In order to produce versatile and potentially functional terpene-based compounds, a (R)-limonene-derived diol and its corresponding five-membered cyclic carbonate were prepared.
Hiroshi Morikawa +6 more
doaj +1 more source