Results 81 to 90 of about 1,745,354 (410)

Perylenequinones from an endophytic Alternaria sp. of Pinus ponderosa

open access: yesHeliyon, 2018
The differential solvent extraction and further purification of fractions of endophytic Alternaria sp. isolated from Pinus ponderosa led to the isolation of further two perylenequinone compounds as 3,6,6a,9,10-pentahydroxy-7,8-epoxy-4-oxo-4,5,6,6a,6b,7,8,
Mudasir A. Tantry   +7 more
doaj  

Beyond the pseudo-time-dependent approach: chemical models of dense core precursors [PDF]

open access: yes, 2010
Context: Chemical models of dense cloud cores often utilize the so-called pseudo-time-dependent approximation, in which the physical conditions are held fixed and uniform as the chemistry occurs. In this approximation, the initial abundances chosen, which are totally atomic in nature except for molecular hydrogen, are artificial.
arxiv   +1 more source

Heterologous expression of bacterial natural product biosynthetic pathways.

open access: yesNatural product reports (Print), 2019
Covering: 2013 to June 2018Heterologous expression of natural product biosynthetic pathways is of increasing interest in microbial biotechnology, drug discovery and optimization. It empowers not only the robust production of valuable biomolecules in more
Liujie Huo   +5 more
semanticscholar   +1 more source

Teaching ‘natural product chemistry’ in Tanzania [PDF]

open access: yes, 2016
Natural products ‘historically’ and ‘today’ have vast importance. This article describes the course ‘Natural Product Chemistry’, a new course in the 2011/2012 academic year in the Faculty of Natural and Applied Sciences at St.
Buchanan, Malcolm S., Sumary, Dominic P.
core   +1 more source

Click-based synthesis and proteomic profiling of lipstatin analogues [PDF]

open access: yes, 2010
Using click chemistry to enable both structural diversity and proteome profiling within a natural product derived library, two out of nineteen lipstatin analogues showed similar activity to Orlistat against fatty acid synthase (FAS), but with an improved
Adam   +38 more
core   +1 more source

Characterization of fungal carbonyl sulfide hydrolase belonging to clade D β‐carbonic anhydrase

open access: yesFEBS Letters, EarlyView.
Here, we performed a functional analysis of the fungal enzymes belonging to clade D of the β‐class carbonic anhydrase family (β‐D‐CA). The β‐D‐CAs in the basidiomycete Gloeophyllum trabeum and the ascomycete Trichoderma harzianum showed very low activity in the hydration of CO2 but exhibited high activity in the hydrolysis of carbonyl sulfide (COS ...
Ryuka Iizuka   +6 more
wiley   +1 more source

Isolation and characterization of starch from Limnophila aromatica

open access: yesHeliyon, 2019
Starch is one of the digestible natural polymers found in vascular plants. This natural polymer is the primary source of polysaccharides to produce energy for humans.
Cynthia Wijaya   +7 more
doaj  

Aegle marmelos phytochemical stabilized synthesis and characterization of ZnO nanoparticles and their role against agriculture and food pathogen

open access: yesGreen Processing and Synthesis, 2019
Nature and nanotechnology have not yet achieved a lucid correlation in the field of science but together they have exhibited immense potential towards the advancement and modification in future science and technology.
Fowsiya J.   +7 more
doaj   +1 more source

Synthetic Studies in Natural Product Chemistry [PDF]

open access: yes, 1960
I. A stereospecific total synthesis of D-(-)-shikimic acid: The evidence which led to assignment of the structure and absolute stereochemistry of shikimic acid is reviewed.
McCrindle, Robert
core  

Diels-Alder chemistry of siloles and their transformation into cyclohex-2-ene-1,4-cis-diols. [PDF]

open access: yes, 2010
The synthesis of siloles with substitution patterns that are continuative toward natural product synthesis are described. Their reactivity in Diels-Alder chemistry was explored through thermal, Lewis acid, and high-pressure reactions.
Pagenkopf, Brian L, Stevens, Andrew C
core   +3 more sources

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