Results 81 to 90 of about 2,205 (198)

Rapid and Enantioselective Assembly of the Lycorine Framework Using Chemoenzymatic Techniques

, 2016
The pentacyclic framework associated with the alkaloid (−)-lycorine (1) can be assembled in as few as six steps from the enantiomerically pure cis-1,2-dihydrocatechol 3 which is itself readily available on a large scale through the whole-cell ...
Martin G. Banwell (1413205), Anthony C. Willis (735858), Matthew T. Jones (2250271), Brett D. Schwartz (1754050)   +3 more
core   +1 more source

Analysis of Amaryllidaceae Alkaloids from by GC-MS and their Cholinesterase Activity

Natural Product Communications, 2011
The underivatized alkaloid mixture extracted from the bulbs of Chlidanthus fragrans Herb. was investigated by capillary GC/MS for the first time. Fifteen known Amaryllidaceae alkaloids of five structure types were identified.
Lucie Cahlíková, Kateřina Macáková, Stanislav Zavadil, Pavel Jiroš, Lubomír Opletal, Klára Urbanová, Luděk Jahodář   +6 more
doaj   +1 more source

The isolation of lycorine [PDF]

Chemistry of Natural Compounds, 1972
T. Sadikov, T. T. Shakirov
openaire   +1 more source

Zephgrabetaine: A New Betaine-type Amaryllidaceae Alkaloid from

Natural Product Communications, 2013
Zephgrabetaine (1), a new betaine type Amaryllidaceae alkaloid, along with seven known alkaloids, lycorine, galanthine, lycoramine, hamayne, haemanthamine, tortuosine, and ungeremine were isolated from the bulbs of Zephyranthes grandiflora and their ...
Deepali Katoch, Dharmesh Kumar, Upendra Sharma, Neeraj Kumar, Yogendra S. Padwad, Brij Lal, Bikram Singh   +6 more
doaj   +1 more source

Lycorine Derivative LY-55 Inhibits EV71 and CVA16 Replication Through Downregulating Autophagy

Frontiers in Cellular and Infection Microbiology, 2019
Hand, foot, and mouth disease (HFMD) is a global health concern, especially in the Asia-Pacific region. HFMD caused by Enterovirus 71 (EV71) and Coxsackievirus A16 (CVA16) infection is usually self-limited but occasionally leads to severe pulmonary edema,
Huiqiang Wang, Huiqiang Wang, Tingting Guo, Yajun Yang, Lian Yu, Xiandao Pan, Yuhuan Li, Yuhuan Li   +7 more
doaj   +1 more source

Preparation of Structurally Diverse Compounds from the Natural Product Lycorine

, 2018
The synthesis of a 52-member compound collection from the natural product lycorine is reported, highlighted by divergent cross-coupling and substitution strategies and an unusual ring rearrangement induced by reaction with aryne ...
Paul J. Hergenrother (1305675), Sarah Z. Tasker, Paul J. Hergenrother, Amanda E. Cowfer (5738429), Amanda E. Cowfer, Sarah Z. Tasker (1557097)   +5 more
core   +1 more source

Analysis of Bioactive Amaryllidaceae Alkaloid Profiles in Species by GC-MS

Natural Product Communications, 2014
The genus Lycoris , a group of Amaryllidaceae plants distributed in temperate regions of Eastern Asia, is already known for containing representative alkaloids typical of this botanical family with a wide range of biological activities (for example ...
Ying Guo, Natalia B. Pigni, Yuhong Zheng, Jean Paulo de Andrade, Laura Torras-Claveria, Warley de Souza Borges, Francesc Viladomat, Carles Codina, Jaume Bastida   +8 more
doaj   +1 more source

Daffodils as Potential Crops of Biologically-active Compounds: Assessment of 40 Ornamental Taxa for their Alkaloid Profile and Cholinesterases Inhibition Activity

Natural Product Communications, 2018
Many varieties of Narcissus (Amaryllidaceae) are planted on a large scale for ornamental purposes and at the same time they represent a rich reservoir of potential small chemical molecules that display several medicinal properties.
Kateřina Breiterová, Miroslav Ločárek, Eliška Kohelová, Markéta Talácková, Daniela Hulcová, Lubomír Opletal, Lucie Cahlíková   +6 more
doaj   +1 more source

Wild Argentinian Amaryllidaceae, a New Renewable Source of the Acetylcholinesterase Inhibitor Galanthamine and Other Alkaloids

Molecules, 2012
The Amaryllidaceae family is well known for its pharmacologically active alkaloids. An important approach to treat Alzheimer’s disease involves the inhibition of the enzyme acetylcholinesterase (AChE).
Gabriela E. Feresin, Jaume Bastida, Alejandro Tapia, German Roitman, Cristina Theoduloz, Strahil Berkov, Natalia B. Pigni, Javier E. Ortiz   +7 more
doaj   +1 more source

Protection of human erythrocyte using Crinum asiaticum extract and lycorine from oxidative damage induced by 2-amidinopropane

, 2011
The intention of this investigation was to evaluate the free radical scavenging activity and erythrocyte protective activity of ethanolic extract of Crinum asiaticum (L) and lycorine. The ethanolic extract of C.
B. Kaleeswaran, S. Ilavenil, Ilavenil, S., D. Tamilvendan, Sumitha, P., Ravikumar, S., Tamilvendan, D., S. Ravikumar, Kaleeswaran, B., P. Sumitha   +9 more
core   +1 more source