Abstract
Biotransformations of sesquiterpenoids by Rhizopus species have been used to provide new derivatives with potential biological activities. In these fungal transformation processes, the main action of the Rhizopus genus has been the introduction of hydroxyl groups into remote positions of the molecules, which is difficult to achieve by chemical means. Other reactions carried out with stereo-selectivity by these microorganisms have been: epoxidations of double bonds, hydrogenations of the exocyclic C-C double bond of the lactone rings, and reductions of carbonyl groups giving Salcohols. Several reactions have also been performed by these fungi with regio-selectivity, such as oxidations of hydroxyl groups and deacetylations. In some biotransformation processes, a carbon skeleton rearrangement of the substrate has taken place.
Call for Papers in Thematic Issues
Advances of Heterocyclic Chemistry with Pesticide Activity
Global food safety and security will continue to be a global concern for the next 50 years and beyond. Plant diseases have had a significant impact on food safety and security throughout the entire food chain, from primary production to consumption. While conventional chemical pesticides have been traditionally used for ...read more
Calculation design of covalent/metal organic framework based catalysts
This research area combines theoretical computation and screening with machine learning for the design of covalent/metal organic framework-based catalysts, bridging the disciplines of organic chemistry, physical chemistry, computational chemistry, materials science, and machine learning. It covers several critical aspects: designing and synthesizing organic catalysts for improved performance, applying computational methods ...read more
Carbohydrates conversion in biofuels and bioproducts
Biomass pretreatment, hydrolysis, and saccharification of carbohydrates, and sugars bioconversion in biofuels and bioproducts within a biorefinery framework. Carbohydrates derived from woody biomass, agricultural wastes, algae, sewage sludge, or any other lignocellulosic feedstock are included in this issue. Simulation, techno-economic analysis, and life cycle analysis of a biorefinery process are ...read more
Catalytic C-H bond activation as a tool for functionalization of heterocycles
The major topic is the functionalization of heterocycles through catalyzed C-H bond activation. The strategies based on C-H activation not only provide straightforward formation of C-C or C-X bonds but, more importantly, allow for the avoidance of pre-functionalization of one or two of the cross-coupling partners. The beneficial impact of ...read more
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