Results 141 to 150 of about 1,570 (164)

Cytotoxic Trachylobane and Kaurane Diterpenes from Psiadia punctulata

2020
Original NMR data (FIDs).
Yaouba, Souaibou, Valkonen, Arto, von der Heiden, Daniel, Lindblad, Sofia, Coghi, Paolo, Irungu, Beatrice, Midiwo, J. O., Wong, Vincent K. W., Yenesew, Abiy, Erdelyi, Mate   +9 more
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Three new ent-kaurane diterpenes from the herbs of Wedelia prostrata

Journal of Natural Medicines, 2016
Three new ent-kaurane diterpenes, 3α-angeloyloxy-17-hydroxy-ent-kaur-15-en-19-oic acid (1), 3α-tigloyloxy-17-hydroxy-ent-kaur-15-en-19-oic acid (2) and 3α-cinnamoyloxykaur-9(11),16-dien-19-oic acid (3), along with five known compounds (4-8), were isolated from the herbs of Wedelia prostrata (Asteraceae).
Zhongnan, Wu, Yubo, Zhang, Li, Yang, Nenghua, Chen, Lin, Jiang, Siqi, Jiang, Guoqiang, Li, Yaolan, Li, Guocai, Wang   +8 more
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Correlation of diterpenes of the (–)-kaurane series and atractyligenin

Australian Journal of Chemistry, 1968
19-Nor-16a- and 19-nor-16ß-(-)-kaurane (11) and (111) have been prepared by unambiguous methods from 16a-( -)-kaurane-3a,l7,19-triol (IV) and (-)-kaur-16-ene-3a,l9-diol (V) and have been identified with samples derived from atractyligenin, thus providing conclusive proof for the skeleton of the latter.
EL Ghisalberti, PR Jefferies, S Passannanti, F Piozzi   +3 more
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A New Kaurane Diterpene from the Seeds of Vernonia anthelmintica

Chemistry of Natural Compounds, 2018
A new kaurane diterpene, 16α,17-acetonide-3α-hydroxykauran (1), and four known octadecenoic acid derivatives,12,13,17-trihydroxy-9(Z)-octadecenoic acid methyl ester (2), 12,13,17-trihydroxy-9(Z)-octadecenoic acid (3), tianshic acid (4), and 1,3-divernolin (5), were isolated from the seeds of Vernonia anthelmintica.
A. Turak, Z. Maimaiti, H. A. Aisa
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Nor-ent-kaurane diterpenes and hydroxylactones from Antennaria geyeri and Anaphalis margaritacea

Phytochemistry, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Ahmed A, Ahmed, Taha A, Hussein, Ahmed A, Mahmoud, Mohamed A, Farag, Paul W, Paré, Małgorzata, Wojcińska, Joe, Karchesy, Tom J, Mabry   +7 more
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Kaurane-Type Diterpene Glycoside from the Stem Bark ofAcanthopanax trifoliatus

Planta Medica, 2004
A new diterpene glycoside, acantrifoside D ( 1), as well as three known diterpenes (2 - 4) were isolated from the stem bark of Acanthopanax trifoliatus from Vietnam. Based on 1D and 2D NMR spectroscopic data, their chemical structures were determined to be 16alpha,17-dihydroxy- ent-kauran-19-oic acid 16- O-beta- D-glucopyranoside 19- O-beta- D ...
Phan Van, Kiem, Xing Fu, Cai, Chau Van, Minh, Jung Joon, Lee, Young Ho, Kim   +4 more
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Bitter kaurane-type diterpene glucosides from the liverwort Jungermannia infusca

Phytochemistry, 1990
Abstract Five new kaurene-type bitter diterpene glucosides, infuscasides AE, have been isolated from the liverwort Jungermannia infusca together with the previously known ent-15α-hydroxykaurene and stigmasteryl glucoside and their structures elucidated by chemical data and the extensive 2D-COSY NMR spectroscopy.
Fumihiro Nagashima, Masao Toyota, Yoshinori Asakawa   +2 more
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Complete1H and13C NMR assignment of a kaurane diterpene fromPiliostigma thonningii

Magnetic Resonance in Chemistry, 1997
The diterpene ent-16α-hydroxykauran-18-oic acid was isolated from the leaves of Piliostigma thonningii. Structural elucidation and complete 1H and 13C NMR chemical shift assignments of this compound were achieved by 2D experiments. © 1997 John Wiley & Sons, Ltd.
M.-T. Martin, M. Païs, A. O. Ogundaini, J. C. Ibewuilke, F. O. Ogungbamila   +4 more
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Structure of Kaurane-Type Diterpenes fromParinari spruceiand their Potential Anticancer Activity

Planta Medica, 2004
Twenty-three kaurane-type diterpenes 1 - 23, including twenty new natural products 1 - 20, have been isolated from the leaves of Parinari sprucei and their structures elucidated by spectroscopic and chemical analysis. The isolated compounds were tested for their cytotoxic activity towards a panel of cancer cell lines. Compounds 9 and 10 showed activity
BRACA, ALESSANDRA, ARMENISE A, MORELLI, IVANO, MENDEZ J, MI Q, CHAI HB, SWANSON SM, KINGHORN AD, DE TOMMASI N.   +8 more
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Tricalysiolides A–F, new rearranged ent-kaurane diterpenes from Tricalysia dubia

Tetrahedron, 2006
Abstract Six rearranged ent-kaurane diterpenes, tricalysiolides A–F, having the cafestol-type carbon framework were isolated from the wood of Tricalysia dubia (Rubiaceae). Their absolute structures were determined on the basis of the 2D NMR spectroscopy, X-ray crystallographic analysis, and chemical methods.
Koichi Nishimura, Yukio Hitotsuyanagi, Noriko Sugeta, Kei-ichi Sakakura, Kazuya Fujita, Haruhiko Fukaya, Yutaka Aoyagi, Tomoyo Hasuda, Takeshi Kinoshita, Dong-Hui He, Hideaki Otsuka, Yoshio Takeda, Koichi Takeya   +12 more
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