Results 181 to 190 of about 2,528 (212)

Clerodane and labdane diterpenoids from Nuxia sphaerocephala

Phytochemistry, 2006
Seven diterpenoids including four clerodane and three labdane derivatives, (13S)-ent-7beta-hydroxy-3-cleroden-15-oic acid (1), ent-7beta-hydroxy-2-oxo-3-cleroden-15-oic acid (2), ent-2,7-dioxo-3-clero-den-15-oic acid (3), ent-18-(E)-caffeoyloxy-7beta-hydroxy-3-cleroden-15-oic acid (4) (13S)-ent-18-(E)-coumaroyloxy-8(17)-labden-15-oic acid (5), ent-18 ...
Mambu, Lengo, Grellier, Philippe, Florent, Loic, Joyeau, Roger, Ramanitrahasimbola, David, Rasoanaivo, Philippe, Frappier, François   +6 more
openaire   +3 more sources

Diterpene Analysis with Emphasis on Clerodanes

1990
Early work on Compositae diterpenes focused on Solidago and the normal-labdane, solidagenone (Figure 33 [pp. 513–514]; Structure 158) (9, 16, 17). Later, ent-clerodanes (kolavanes) were found to co-occur with the labdanes (364, 365). The first identified novel clerodane, solidagonic acid (Figure 33; Structure 500), was shown by chemical interconversion
Fred Seaman, Ferdinand Bohlmann, Christa Zdero, Tom J. Mabry   +3 more
openaire   +1 more source

New clerodane diterpenoids from Casearia sylvestris

Fitoterapia, 2009
Two new clerodane diterpenoids 2 beta-methoxy-cleroda-3,13-dien-18-carboxy-15,16-olide (1) and 15 xi-methoxy-cleroda-3,12-dien-18-carboxy-15,16-olide (2) and one new nitrogen-containing clerodane diterpenoid 15-oxo-echinophyllin A (3), along with six known compounds, namely, echinophyllin A, (-)-patagonic acid, tyrosol, oplopanone, 4-hydroxy-4-methyl-2-
Wei, Wang, Zulfiqar, Ali, Xing-Cong, Li, Troy A, Smillie, De-An, Guo, Ikhlas A, Khan   +5 more
openaire   +2 more sources

Clerodane Diterpenes from Tinospora rumphii

Journal of Natural Products, 2000
Two new diterpenes (1 and 2) were obtained from the leaves of Tinospora rumphii, along with the known compounds tinotufolin D and vitexilactone. The structures of compounds 1 and 2 were established on the basis of spectroscopic studies.
C Y, Ragasa, M C, Cruz, R, Gula, J A, Rideout   +3 more
openaire   +2 more sources

Neo-clerodane diterpenoids from Clerodendrum inerme

Phytochemistry, 2005
Three neo-clerodane diterpenoids, inermes A, B and 14,15-dihydro-15 beta-methoxy-3-epicaryoptin, have been isolated from the hexane extract of the leaves of Clerodendrum inerme in addition to an epimeric mixture of 14,15-dihydro-15-hydroxy-3-epicaryoptin. Structures of these compounds have been elucidated on the basis of spectral studies.
Richa, Pandey, Ram K, Verma, Madan M, Gupta   +2 more
openaire   +2 more sources

Neo-clerodane diterpenoids from Baccharis incarum

Phytochemistry, 1985
Abstract A new neo-clerodane diterpenoid was isolated from the aerial parts of Baccharis incarum together with the previously known diterpenoids bacchalineol and barticulidiol.
Arturo Givovich, Aurelio San-Martín, Mariano Castillo   +2 more
openaire   +1 more source

Cytotoxic clerodane diterpenes from Glossocarya calcicola

Phytochemistry, 2005
Three clerodane diterpenes were isolated and identified from leaf extract of Glossocarya calcicola. Compound has been characterised as (rel)-10betaH-trans-12xi-(2-methylbut-2(E)-enoyl)-1beta-(isobutanoyl)-6alpha,13xi-dihydroxyclerodan-4(20),8(18)-dien-7,15-dione-15,16-oxide, to which we have assigned the trivial name calcicolin-A.
Rasikari, Heidi L, Leach, David N, Waterman, Peter G, Spooner-Hart, Robert N, Basta, Albert H, Banbury, Linda K, Winter, Kelly M, Forster, Paul I   +7 more
openaire   +3 more sources

Clerodane diterpenoids

Natural Product Reports, 1992
A T, Merritt, S V, Ley
openaire   +2 more sources

The genomes of medicinal skullcaps reveal the polyphyletic origins of clerodane diterpene biosynthesis in the family Lamiaceae

Molecular Plant, 2023
Evangelos C. Tatsis
exaly  

Clerodane and 5 10--Clerodane-type diterpenoids from

Journal of Molecular Structure, 2021
Sérgio Zamudio, Brenda Y Bedolla-García, Leovigildo Quijano   +2 more
exaly