Results 61 to 70 of about 20,581 (189)

Kupeantha (Coffeeae, Rubiaceae), a new genus from Cameroon and Equatorial Guinea [PDF]

, 2018
Two new coffee relatives (tribe Coffeeae, Rubiaceae), discovered during botanical expeditions to Cameroon, are examined for generic placement, and the placement of three previously known species (Argocoffeopsis fosimondi, A. spathulata and Calycosiphonia
Alvarez-Aguirre, Maria G, Cheek, Martin, Grall, Aurélie, Howes, Melanie-Jayne R, Larridon, Isabel, Sonké, Bonaventure   +5 more
core   +3 more sources

Kaurane-type diterpenes from Adenostemma lavenia O. Kuntze.

Chemical and Pharmaceutical Bulletin, 1990
Ten 11-oxygenated kauran-19-oic acids, ent-11α, 15α-dihydroxykaur-16-en-19-oic acid, ent-11α-hydroxy-15α-acetoxykaur-16-en-19-oic acid, ent-11α-hydroxy-15-oxo-kaur-16-en-19-oic acid and adenostemmoic acids A-G and their nine glycosides, paniculosides II and III and adenostemmosides A-G were characterized from Adenostemma lavenia O. KUNTZE.
Shigeru SHIMIZU, Toshio MIYASE, Kaoru UMEHARA, Akira UENO   +3 more
openaire   +2 more sources

Diterpene Synthases and Their Responsible Cyclic Natural Products [PDF]

, 2014
This review provides an overview of diterpene synthases which were initially identified via genetic and/or biochemical means, traversing all organisms researched to ...
Hai-Yan Gong, Xiao-Ya Chen, Ying Zeng
core   +1 more source

Casbane diterpene as a promising natural antimicrobial agent against biofilm-associated infections [PDF]

, 2010
Croton nepetaefolius is a native plant from northeastern Brazil that belongs to the Euphorbiaceae family. The biological action of this plant has been extensively explored, being the secondary metabolites responsible for its properties alkaloids ...
Benildo Sousa Cavada, Burton, Edson Holanda Teixeira, El Mekkawy, Francisco Vassiliepe Sousa Arruda, Hélcio Silva dos Santos, Kuzma, Majtán, Maria Olívia Pereira, Maria Rose Jane Ribeiro Albuquerque, Mariana Henriques, McChesney, Murillo, Paulo Nogueira Bandeira, Rehm, Rocchetta, Taweechaisupapong, Victor Alves Carneiro, Xu   +18 more
core   +2 more sources

A new ent-kaurane diterpene from Isodon henryi

Natural Product Research, 2019
One new ent-Kaurane diterpenoid (1) was isolated from the ethyl acetate fraction of Isodon henryi. Along with ten diterpenoids (2–11) were isolated from this plant for the first time, including six 7,20-epoxy diterpenoids, three enmenol-type diterpenoids and one 6,7-seco-ent-kaurene diterpenoid.
Xue, Jiang, Ling-Xia, Zhang, Qing-Mei, Feng, Hong, Wu, Ya-Lin, Liu, De-Qin, Wang, Li-Ping, Dai, Zhi-Min, Wang   +7 more
openaire   +2 more sources

An overview of the traditional use, phytochemistry, and biological activity of the genus Homalanthus [PDF]

, 2023
Homalanthus species are native to tropical Asia and the Pacific region. This genus, comprising 23 accepted species, received less scientific attention compared to other genera of the Euphorbiaceae family. Seven Homa-lanthus species, such as H. giganteus,
Hohmann Judit, Wirasisya Dyke Gita
core   +1 more source

Diversity of the diterpenes in the leaves of Xylopia laevigata (Annonaceae) and their cytotoxicities

Química Nova
The phytochemical investigation of the hexane extract which was obtained from the leaves of Xylopia laevigata (Annonaceae) produced six terpenes. Among these, five diterpenes named abieta-7,13-dien-3-one, ent-7β-acetoxy-16β-hydroxy-kaurane, 4-epi ...
Emmanoel V. Costa, Marília F. C. Sampaio, Leociley R. A. Menezes, Lívia M. Dutra, Cinara O. S. Costa, Maria Lúcia B. Pinheiro, Felipe M. A. da Silva, Milena B. P. Soares, Daniel P. Bezerra, Andersson Barison, Hector H. F. Koolen   +10 more
doaj   +1 more source

SYNTHETIC TRANSFORMATIONS OF ENT-KAURENOIC ACID [PDF]

Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2015
This paper presents a review on kaurane diterpenes, covering various aspects of chemical and microbiological transformations of native ent-kaurenoic acid, namely, its reactions via COOH groups, double bonds and rearrangements of the carbon skeleton that ...
Olga Morarescu
doaj  

Promiscuous terpene synthases from Prunella vulgaris highlight the importance of substrate and compartment switching in terpene synthase evolution

New Phytologist, Volume 223, Issue 1, Page 323-335, July 2019., 2019
Summary The mint family (Lamiaceae) is well documented as a rich source of terpene natural products. More than 200 diterpene skeletons have been reported from mints, but biosynthetic pathways are known for just a few of these. We crossreferenced chemotaxonomic data with publicly available transcriptomes to select common selfheal (Prunella vulgaris) and
Sean R. Johnson, Wajid Waheed Bhat, Radin Sadre, Garret P. Miller, Alekzander Sky Garcia, Björn Hamberger   +5 more
wiley   +1 more source

STRUCTURE-ACTIVITY RELATIONSHIP STUDY OF DITERPENES FOR TREATMENT OF ALZHEIMER'S DISEASE

Química Nova
Alzheimer's disease is an irreversible, degenerative and age-related disease which is growing more and more with the increase in life expectancy. Kaurane diterpenes are a class of natural products available in large amounts in nature and isolated from ...
Gabriel F. dos Santos, Rondinelle G. Pereira, Maria A. D. Boaventura, Francisco A. Macias, Gesiane da S. Lima, Amanda C. S. Coelho, Jose M. G. Molinillo, Antonio Cala, Jacqueline A. Takahashi   +8 more
doaj   +1 more source