Results 51 to 60 of about 2,706 (189)

Assessment of Air Pollution Tolerance and Physicochemical Alterations of Alstonia scholaris (L.) R.Br. along Roadsides of Lahore, Pakistan

Aerosol and Air Quality Research, 2023
Air pollution has become a severe urban environmental and health problem in several countries around the globe. Air pollutants also affect the physiological, morphological and biochemical processes in plants such as stomatal function, photosynthesis ...
Zahid Mehmood, Ali Hasnain, Muhammad Luqman, Sohaib Muhammad, Narayan Babu Dhital, Arooba John, Maryam Iqbal, Amna Ejaz, Matiba Tufail, Harma, Hsi-Hsien Yang, Muhammad Umer Farooq Awan   +11 more
doaj   +1 more source

Aluminium Accumulation Potential of Alstonia scholaris

INTERNATIONAL JOURNAL OF PLANT AND ENVIRONMENT, 2020
Aluminium toxicity commonly affects plants and considerably reduces crop production. However, some plants, particularly tropical trees, have adapted to high aluminium concentrations by using strategies such as aluminium accumulation. The present study is the first report of aluminium hyperaccumulation in Alstonia scholaris, which is a common tree in ...
Kevin D’cruz, Mugdha Ambatkar
openaire   +1 more source

Urban Air Quality and Pollution Tolerance of Roadside Trees in Delhi: An APTI Approach [PDF]

BIO Web of Conferences
The study aim was to investigated air pollution tolerance capacity in selected 7 tree species (Azadirachta indica, Alstonia scholaris, Ficus relegiosa, Terminalia arjuna, Ficus infectoria, Cassia Fistula, and Polyalthea) at different polluted (Anand ...
Shankar Shiv, Kaushik Nutan, Rai Mayank, Kumar Nishant   +3 more
doaj   +1 more source

EVALUATION OF POSSIBLE ANTICONVULSANT EFFECT OF ALSTONIA SCHOLARIS (LINN.) R. BR. EXTRACTS ON EPILEPSY MODELS [PDF]

, 2015
Objective: In this study, the effects of ethanolic extract of Alstonia scholaris (EAS) were evaluated on epilepsy models.Methods: Pentylenetetrazole (PTZ), pilocarpine, and maximal electroshock (MES)-induced convulsions in mice were recorded.
Quazi, Jawed ALI
core   +1 more source

Formal Synthesis of the Akuammiline Alkaloid (±)‐Strictamine via a (4 + 2) Annulation Reaction With a Donor–Acceptor Cyclobutane

Helvetica Chimica Acta, Volume 109, Issue 4, April 2026.
We report a concise formal synthesis of (±)‐strictamine via a silylium‐catalyzed (4 + 2) annulation of a donor–acceptor cyclobutane, achieved in 13 steps from tryptamine. ABSTRACT The akuammiline alkaloids are complex monoterpene indole natural products with a rigid cage‐like architecture and diverse biological activities.
Clément Tanguy, Emma G. L. Robert, Jerome Waser   +2 more
wiley   +1 more source

Alstonia scholaris: It′s Phytochemistry and pharmacology

Chronicles of Young Scientists, 2011
Complementary therapies based on herbal medicines are the world's oldest form of medicine and recent reports suggest that such therapies still enjoy vast popularity, especially in developing countries where most of the population does not have easy access to modern medicine.
Dhirender Kaushik, AC Rana, Pawan Kaushik, Neha Sharma   +3 more
openaire   +1 more source

Oxidative Rearrangements of the Alkaloid Intermediate Geissoschizine

Angewandte Chemie, Volume 137, Issue 24, June 10, 2025.
19E‐geissoschizine is a key precursor in the biosynthesis of monoterpene indole alkaloids such as strychnine, ibogaine, and vinblastine. Using enzymatic assays and gene silencing, three CYPs were identified from C. roseus that oxidize this compound to four alkaloid scaffolds: strychnos, sarpagan, akuammiline, and mavacurane. Mutational analysis reveals
Mohamed O. Kamileen, Benke Hong, Klaus Gase, Maritta Kunert, Lorenzo Caputi, Benjamin R. Lichman, Sarah E. O'Connor   +6 more
wiley   +2 more sources

Unique Monoterpenoid Indole Alkaloids from Alstonia scholaris

, 2016
A pair of geometrically isomeric monoterpenoid indole alkaloids with a skeleton rearrangement and two additional carbons, named (19,20) E-alstoscholarine (1) and (19,20) Z-alstoscholarine (2), were obtained from the leaf extract of Alstonia scholaris ...
Zhi-Zhi Du (681904), Xiao-Dong Luo (1426072), Xiang-Hai Cai (1702003)   +2 more
core   +2 more sources

Pharmacological, Phytochemical, and Toxicological Evaluation of the Ethanolic Extract of Alstonia boonei (Apocynaceae) Toward Antimalarial Phytodrug Development

Journal of Chemistry, Volume 2026, Issue 1, 2026.
Despite ongoing efforts, malaria persists as a significant health challenge in developing countries. This study aims to investigate the antimalarial potential of Alstonia boonei stem bark, a traditional plant in Cameroon. The EtOH‐H2O (70:30) extract was subjected to phytochemical screening and chromatographic isolation of compounds.
Diane K. Nono, Rachel L. Y. Tchoukouaha, Armelle D. Tchamgoue, Hermia N. Ikome, Godfred A. Ayimele, Protus A. Tarkang, Denis Zofou, Olivia Jansen, Michel Frédérich, Gabriel A. Agbor, Augustin Nkengfack, Alembert T. Tchinda, Sohini Basu Roy   +12 more
wiley   +1 more source

PERBANDINGAN CIRI ANATOMI KAYU DAN KULIT 3 JENIS PULAI (Alstonia sp.)

Jurnal Penelitian Hasil Hutan (Journal of Forest Products Research), 2011
Pulai (Alstonia sp.). yang termasuk ke dalam suku Apocynaceae banyak diinformasikan mengandung getah yang sering digunakan sebagai obat tradisionil. Dalam berbagai literatur, jenis pohon berkhasiat obat sudah banyak disinggung namun diskripsi anatomi ...
Andianto Andianto
doaj   +1 more source