Article
Biochemistry & Molecular Biology
Miaomiao Zhang, Hongmei Jiao, Haojie Ma, Ran Li, Bo Han, Yuqi Zhang, Jijiang Wang
Summary: A convenient method for the synthesis of alcohols using zinc catalysis has been reported. It does not require acid or base hydrolysis reagents and has high selectivity and scalability, as well as tolerance towards sensitive functionalities.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Plant Sciences
Qing Zhang, Xiuting Hua, Hong Liu, Yuan Yuan, Yan Shi, Zhengchao Wang, Muqing Zhang, Ray Ming, Jisen Zhang
Summary: The study identified 105 ST genes in Saccharum and revealed different expression patterns, providing insights into the molecular mechanisms of sugar metabolism.
Article
Chemistry, Multidisciplinary
Haigen Fu, Heather Lam, Megan A. Emmanuel, Ji Hye Kim, Braddock A. Sandoval, Todd K. Hyster
Summary: The study demonstrates an ene-reductase catalyzed asymmetric hydroalkylation of olefins using alpha-bromoketones as radical precursors, resulting in high levels of enantioselectivity. Radical initiation occurs via ground-state electron transfer from the flavin cofactor located within the enzyme active site. Through multiple rounds of site saturation mutagenesis, a variant of the enzyme capable of catalyzing the desired reaction was obtained, highlighting the utility of ground-state electron transfers in enabling non-natural biocatalytic C-C bond forming reactions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Applied
Zhengming Xu, Chengtao Wang, Huaifeng Yan, Zhengang Zhao, Lijun You, Chi-Tang Ho
Summary: This study investigated the color intensification of the major anthocyanin in sugarcane by phenolic acids/aldehydes, finding that temperature and concentration affected the color enhancement. Thermodynamic parameters and quantum chemical calculations showed that hydrogen bonds and van der Waals force interactions contributed to color. Pyranoanthocyanins derived from cyanidin-3-O-glucoside and phenolic acids were identified, with electron-donating substituents stabilizing the intermediate carbenium ion forming the final products.
Article
Plant Sciences
Qing Jiang, Xiuting Hua, Huihong Shi, Jia Liu, Yuan Yuan, Zhen Li, Shuangyu Li, Meiqing Zhou, Chongyang Yin, Meijie Dou, Nameng Qi, Yongjun Wang, Muqing Zhang, Ray Ming, Haibao Tang, Jisen Zhang
Summary: We analyzed RNA-sequencing samples to investigate the mechanisms behind differences in photosynthesis and sugar accumulation between Saccharum spontaneum and Saccharum officinarum. The divergences in sugar accumulation were found to be due to enrichment of carbohydrate metabolism and the pentose phosphate pathway. Compared to S. officinarum, S. spontaneum showed higher enrichment of photosynthesis and more complex regulation of photosynthesis-related genes, as well as a lack of gene interactions with sulfur assimilation stimulated by photorespiration.
Article
Agronomy
Antonio Santana Batista de Oliveira Filho, Renato de Mello Prado, Gelza Carliane Marques Teixeira, Antonio Marcio Souza Rocha, Jonas Pereira de Souza Junior, Marisa de Cassia Piccolo, Juan Ricardo Rocha
Summary: The application of silicon fertilization combined with leaf spraying can improve sugarcane's resistance to drought, increase nutrient utilization efficiency, and promote growth. Silicon helps reduce oxidative stress, increase relative water content and water potential, affecting photosynthetic efficiency, and promoting species growth.
AGRICULTURAL WATER MANAGEMENT
(2021)
Article
Chemistry, Organic
Vinothkumar Vinayagam, Tanguturi Venkatanarayana Hajay Kumar, Ravi Nune, Satish Kumar Karre, Subir Kumar Sadhukhan
Summary: We developed a one-step procedure for selectively reducing secondary and tert-amides to their corresponding amine derivatives in the presence of an ester. This reaction was achieved by combining photoredox, nickel catalysis, and phenyl silane as a reductant under blue LED light (455 nm) at room temperature. Furthermore, this mild light-promoted dual metallaphotoredox catalytic system was effective in selectively reducing lactam to cyclic amines without affecting the ester moiety.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Qi Jin, Jingqi Zhang, Shuangping Huang, Lili Gao, Honghong Chang, Jiandong Zhang
Summary: A novel fully biocatalytic system was developed for the direct stereoselective hydroamination of aryl alkenes to produce chiral amines. The process involves sequential alkene asymmetric hydration catalyzed by hydratase (HD), followed by in situ oxidation of alcohol into ketone by two enantiocomplementary alcohol dehydrogenases (ADHs), and finally, enantioselective transformation of ketone into enantiomerically pure amine by γ-transaminase (TA). This research achievement provides a highly selective, highly atom-economical, green and sustainable method for synthesizing chiral amines from alkenes via formal alkene asymmetric hydroamination.
Article
Plant Sciences
Gelza Carliane Marques Teixeira, Renato de Mello Prado, Antonio Marcio Souza Rocha, Marisa de Cassia Piccolo
Summary: This study assesses the beneficial effects of silicon supplementation on sugarcane and energy cane crops under prolonged periods of water deficit. Silicon can improve the C:N:P balance and increase nutrient use efficiencies, mitigating the damage caused by water deficit and reducing climate change effects on crops.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Romina D. Ceccoli, Dario A. Bianchi, Daniela V. Rial
Summary: This article introduces a new eco-friendly route for the production of 2-phenylethyl acetate (2-PEA) and 2-phenylethanol (2-PE) from simple starting materials. These compounds are widely used in cosmetics, food, and beverages.
Article
Environmental Sciences
Olubunmi Kolawole Akiode, Ahmed Adetoro, Augustine Ikechukwu Anene, Samson Olusegun Afolabi, Yakubu Adekunle Alli
Summary: This study focuses on the preparation and modification of Saccharum officinarium as an adsorbent for the removal of chromium (VI) ions. The adsorbent was modified with oxalic acid to improve its performance.The optimal adsorption conditions were found to be pH 2 and a contact time of 180 min, with high efficiencies of 56.7% and 92.6% for RSO and MSO, respectively. The adsorption capacity increased with the initial metal ion concentration. The experimental data fit well with Freundlich, Langmuir, and Sips models.The adsorption process was favored and thermodynamic parameters indicated that it was feasible, spontaneous, and endothermic. The reusability potential of RSO and MSO showed promising economic value and reliability for the removal of Cr (VI) ions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Plant Sciences
Siyu Chen, Zhongliang Chen, Xinru Lin, Xinyan Zhou, Shangdong Yang, Hongwei Tan
Summary: The mechanisms underlying resistance to smut in different sugarcane cultivars were elucidated by analyzing the compositions, functions, and metabolites of endophytic bacteria and fungi. The results showed that non-smut-sensitive sugarcane varieties had higher levels of ethylene, salicylic acid, and jasmonic acid. Additionally, antagonistic fungi and active metabolic pathways were found to contribute to the resistance of these varieties to smut.
Article
Plant Sciences
Kai Wang, Dong Xiang, Kai Xia, Bo Sun, Haris Khurshid, Ayman M. H. Esh, Hui Zhang
Summary: This study isolated and characterized highly repetitive and abundant sequences in sugarcane cultivars using a novel strategy. The results revealed copy number underestimation of some highly repeated sequences in current genome assemblies, as well as rapid turnover of centromeric DNA in sugarcane.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Chemistry, Organic
Ekaterina Levashova, Maria Adamchik, Grigory Kantin, Dmitry Dar'in
Summary: Here, a chemo- and diastereoselective formal C-C insertion reaction was described, which introduced 1,2-disubstituted 4-diazo-3(2H)-isoquinolones and 4-diazoisochroman-3-one into the C-CHO bonds of aldehydes, resulting in all-carbon α-quaternary aldehydes bearing medicinally important 1,4-dihydro-3(2H)-isoquinolone scaffold. The protocol exhibited preferential 1,2-carbon migration over the common 1,2-H shift, and the reaction tolerated various functionalities in both aldehyde and diazo components, providing the target homologated aldehydes in generally high yields. The synthetic utility of this method was further demonstrated by transformations of the formyl moiety.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Min Li, Xinli Liu, Dongmei Cui
Summary: Reduction of a wide range of carbonyl derivatives with excellent efficiency under mild reaction conditions was achieved using complex 1 and pinacolborane as a reducing agent. The products obtained included aldehydes, ketones, and esters, with chirality being largely retained especially when chiral substrates were used.
DALTON TRANSACTIONS
(2021)
Article
Surgery
Nayanna de Oliveira Ramos Melo, Camila de Carvalho Juanes, Mayara Freire de Alencar Alves, Emiliano Tiago Melo Silva, Francisco Vagnaldo Fechine Jamacaru, Telma Leda Gomes de Lemos, Conceicao Aparecida Dornelas
ACTA CIRURGICA BRASILEIRA
(2018)
Article
Chemistry, Multidisciplinary
Francisco Felipe Maia da Silva, Francisco Jose Queiroz Monte, Telma Leda Gomes de Lemos, Patricia Georgina Garcia do Nascimento, Alana Kelly de Medeiros Costa, Luanda Misley Mota de Paiva
CHEMISTRY CENTRAL JOURNAL
(2018)
Article
Chemistry, Organic
Thiago de S. Fonseca, Lara D. Lima, Maria da C. F. de Oliveira, Telma L. G. de Lemos, Davila Zampieri, Francesco Molinari, Marcos C. de Mattos
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2018)
Article
Agricultural Engineering
Thiago P. Chaves, Raizza Eveline E. Pinheiro, Eveny S. Melo, Maria Jose dos S. Soares, Joao Sammy N. Souz, Tiago Brito de Andrade, Telma Leda Gomes de Lemos, Henrique D. M. Coutinho
INDUSTRIAL CROPS AND PRODUCTS
(2018)
Article
Chemistry, Multidisciplinary
Bruna M. de Mesquita, Patricia G. G. do Nascimento, Luciana G. S. Souza, Iolanda F. de Farias, Romezio A. C. da Silva, Telma L. G. de Lemos, Francisco J. Q. Monte, Irvila R. Oliveira, Maria T. S. Trevisan, Horlando C. da Silva, Gilvandete M. P. Santiago
Article
Chemistry, Analytical
R. N. S. Santiago, P. T. C. Freire, A. M. R. Teixeira, P. N. Bandeira, H. S. Santos, T. L. G. Lemos, C. A. N. Ferraz
VIBRATIONAL SPECTROSCOPY
(2018)
Article
Surgery
Vanessa Nogueira Lages Braga, Camila de Carvalho Juanes, Helio De Souza Peres Junior, Jose Robson de Sousa, Bruno Coelho Cavalcanti, Francisco Vagnaldo Fechine Jamacaru, Telma Leda Gomes de Lemos, Conceicao Aparecida Dornelas
ACTA CIRURGICA BRASILEIRA
(2019)
Article
Chemistry, Organic
Diana Meneses Souza, Luciana Lucas Machado, Angelo Henrique Lira Machado
TETRAHEDRON LETTERS
(2019)
Article
Plant Sciences
Marlene Benedita Ribeiro, Rafael Soares Pozzi Malheiros, Luciana Lucas Machado, Ana Maria Mapeli
IHERINGIA SERIE BOTANICA
(2020)
Article
Green & Sustainable Science & Technology
C. V. P. Pascoal, A. L. L. Oliveira, D. D. Figueiredo, J. C. C. Assuncao
Article
Chemistry, Multidisciplinary
Symone Costa de Castro, Naiara Maia Oliveira, Janiel Ramos de Oliveira, Luciana Lucas Machado, Katyuscya Veloso Leao, Mauro Alves Bueno
Summary: Brazil has the largest plant diversity globally, with many species used in traditional medicine. The study on Gomphrena vaga Mart., an endemic species in Brazil, showed its phytotherapeutic potential with high phenolic compound content and antioxidant and antibacterial activities.
REVISTA VIRTUAL DE QUIMICA
(2021)
Article
Forestry
Rafael Pozzi Malheiros, Florisvalda da Silva Santos, Luciana Lucas Machado, Ana Maria Mapeli
FLORESTA E AMBIENTE
(2019)
Article
Chemistry, Multidisciplinary
Mayara M. Santiago, Joao Carlos C. Assuncao, Emilia Maria A. Santos, Cynara R. Aguiar, Bruno Cesar B. Salgado
REVISTA VIRTUAL DE QUIMICA
(2018)
Article
Chemistry, Multidisciplinary
Gisele R. Aguiar, Telma L. G. de Lemos, Conceicao A. Dornelas, Andre M. da Silva, Macia C. S. de Almeida, Daniele A. Ferreira, Francisco J. Q. Monte, Raimundo Braz-Filho, Irvila R. de Oliveira, Patricia Georgina G. do Nascimento
REVISTA VIRTUAL DE QUIMICA
(2018)
Article
Chemistry, Multidisciplinary
Francisca Belkise de F. Moreira, Rita de Cassia de Freitas Bezerra, Francisco Eduardo Arruda Rodrigues, Joao Carlos da Costa Assuncao, Tathilene Bezerra Mota Gomes Arruda
ORBITAL-THE ELECTRONIC JOURNAL OF CHEMISTRY
(2018)
