Synthesis of Enantiopure Oxygen- and Nitrogen-Containing Heterocycles by Diastereoselective Ring-Closing Metathesis Reaction in Perhydro-1,3-benzoxazine Derivatives [PDF]
, 2019 Producción CientíficaDiastereoselective ring‐closing metathesis reactions on chiral trienic perhydro‐1,3‐benzoxazines derived from (−)‐8‐aminomenthol featuring two diastereotopic olefin chains is described.
Andrés Juan, Celia +4 more
core +2 more sources
Toward the total synthesis of spirastrellolide A. Part 3: Intelligence gathering and preparation of a ring-expanded analogue [PDF]
, 2007 Different methods for the formation of the C.25–C.26 bond of spirastrellolide A (1) are evaluated that might qualify for the end game of the projected total synthesis, with emphasis on metathetic ways to forge the macrocyclic ...
Ceccon, J. +5 more
core +2 more sources
Molecules, 2011 The present study reports the Gas Chromatography-Mass Spectrometry (GC-MS) evaluation of the hexanes and dichloromethane fractions from extracts of the red alga Centroceras clavulatum (C. Agardh) Montagne. Twenty three compounds were identified, totaling
Hosana M. Debonsi +8 more
doaj +1 more source
Reactivity of (1-methoxycarbonylpentadienyl)iron(1+) cations with hydride, methyl, and nitrogen nucleophiles [PDF]
, 2017 The reaction of tricarbonyl and (dicarbonyl)triphenylphosphine (1-methoxycarbonyl-pentadientyl)iron(1+) cations 7 and 8 with methyl lithium, NaBH3CN, or potassium phthalimide affords (pentenediyl)iron complexes 9a-c and 11a-b, while reaction with ...
Anobick Sar +58 more
core +2 more sources
Dual function of active constituents from bark of Ficus racemosa L in wound healing
BMC Complementary and Alternative Medicine, 2018 Background Different parts including the latex of Ficus racemosa L. has been used as a medicine for wound healing in the Ayurveda and in the indigenous system of medicine in Sri Lanka.
Nisansala Swarnamali Bopage +5 more
doaj +1 more source
Beilstein Journal of Organic Chemistry, 2022 A reliable method for the synthesis of bis-spirocyclic derivatives of 3-azabicyclo[3.1.0]hexanes through the 1,3-dipolar cycloaddition (1,3-DC) reactions of cyclopropenes to the stable azomethine ylide – protonated form of Ruhemann's purple (PRP) has ...
Alexander S. Filatov +4 more
doaj +1 more source
Acta Crystallographica Section E: Crystallographic Communications, 2022 The title chlorin, 2PhH2, hydrogen-bonded to dimethylaminopyridine (DMAP), C44H32N4O2·C7H10N2, and its corresponding zinc(II) complex, 2PhZn, axially coordinated to ethylenediamine (EDA), [Zn(C44H30N4O2)]·C2H8N2, were isolated and crystallized by ...
Nivedita Chaudhri +2 more
doaj +1 more source
Crystal structure of bis(3-bromomesityl)(quinolin-1-ium-8-yl)boron(III) tribromide
Acta Crystallographica Section E: Crystallographic Communications, 2015 The title compound, C27H26.82BBr2.18N+·Br3−, is a cationic triarylborane isolated as its tribromide salt. The aryl substituents include a protonated 8-quinolyl group and two 3-bromomesityl groups.
Jungho Son +2 more
doaj +1 more source
A–C Estrogens as Potent and Selective Estrogen Receptor-Beta Agonists (SERBAs) to Enhance Memory Consolidation under Low-Estrogen Conditions [PDF]
, 2018 Estrogen receptor-beta (ERβ) is a drug target for memory consolidation in postmenopausal women. Herein is reported a series of potent and selective ERβ agonists (SERBAs) with in vivo efficacy that are A–C estrogens, lacking the B and D estrogen rings ...
Donaldson, William A. +12 more
core +4 more sources
Kigelia africana fruit: Constituents, bioactivity, and reflection on composition disparities
World Journal of Traditional Chinese Medicine, 2017 Objective: Kigelia africana, a tropical tree, which has long been used in African traditional medicine. The objective of the current study has been identifying the constituents of K. africana and verifying its utilities in traditional medicine. Materials
Ahmed Galal Osman +3 more
doaj +1 more source