Results 91 to 100 of about 186 (129)

Synthesis of the Proposed Structure of Fudecalone, an Anticoccidial Drimane Terpenoid

Organic Letters, 1999
[formula: see text] The proposed structure of fudecalone (1), an anticoccidial drimane sesquiterpene, was synthesized as a racemate in six steps starting from a known phthalide (5). Interestingly, our synthetic 1 showed conformation 1b, while the natural one was reported as 1a, and the NMR spectral data were not identical.
H, Watanabe, T, Furuuchi, T, Yamaguchi, T, Kitahara   +3 more
openaire   +2 more sources

Labdanolic Acid as Synthetic Precursor of Active Drimanes

Natural Product Research, 1995
Abstract Labdanolic acid 1, an abundant and easily isolable natural product, was transformed by simple and high yielding reactions into drimadiene 3, in multigram scale. Compound 3 could be a versatile synthon for the preparation of antifeedant drimanes.
Isidro S Marcos, David Díez, Pilar Basabe   +2 more
exaly   +2 more sources

Drimane derivatives from Drimys brasiliensis

Phytochemistry, 1986
Abstract Drimys brasiliensis gave confertifolin and two new drimane derivatives identified as 1β-p-coumaroyloxypolygodial and 1β-p-coumaroyloxyvaldiviolide.
Walter Vichnewski, Palaniappan Kulanthaivel, Werner Herz   +2 more
openaire   +1 more source

Drimane Homochiral Semisynthesis: Pereniporin a,9-EPI-Warburganal and C-9 Nitrogenated Drimanes

Natural Product Letters, 1998
Abstract Starting with 12-acetoxy-7,9(11)-drimadiene, prepared from methyl zamoranate, a major Halimium viscosum component, pereniporin A, 9-epi-warburganal and a precursor of C-9 nitrogenated drimanes were synthesized.
J. G. Urones, D. Díez, P. M. Gómez, I. S. Marcos, P. Basabe, R. F. Moro   +5 more
openaire   +1 more source

ChemInform Abstract: The Synthesis of Drimane Sesquiterpenoids

ChemInform, 1991
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
B. J. M. JANSEN, A. DE GROOT
openaire   +1 more source

Drimane-Type Sesquiterpenes fromPolygonum hydropiper

Planta Medica, 2011
One new drimane-type sesquiterpenoid, 3 β-angeloyloxy-7-epifutronolide (1), and one new natural product, polygonumate (2), along with six known drimane-type sesquiterpenes [dendocarbin L (3), (+) winterin (4), (+) fuegin (5), changweikangic acid A (6), futronolide (7), and 7-ketoisodrimenin (8)] were isolated from the whole plant of Polygonum ...
Rajia, Sultana, Rashadul, Hossain, Achyut, Adhikari, Zulfiqar, Ali, Sammar, Yousuf, Muhammad Iqbal, Choudhary, Muhammad Yusuff, Ali, Muhammad Shahed, Zaman   +7 more
openaire   +2 more sources

Pericyclic reactions of vinylallenes: from calciferols to retinoids and drimanes

Accounts of Chemical Research, 1983
William H Okamura
exaly   +2 more sources

ChemInform Abstract: Transformation of Labdanes into Drimanes: Obtention of 11,12‐Diacetoxy‐7‐drimene, Precursor of Biologically Active Drimanes.

ChemInform, 1988
AbstractUnder the conditions shown in the scheme the ester (I), isolated from Halimium viscosum, can be successfully transformed to the title compound (VII) which is obtained together with its Δ8‐isomer (18%).
J. G. URONES, I. S. MARCOS, D. DIEZ MARTIN   +2 more
openaire   +1 more source

Drimane sesquiterpenoids from cultures of basidiomycete Ganoderma subresinosum

Journal of Natural Medicines
Nine previously undescribed drimane sesquiterpenoids, ganoresinosins A-I (1-9), were isolated from cultures of basidiomycete Ganoderma subresinosum. The absolute configuration of ganoresinosin H (8) was determined using the modified Mosher's method. Ganoresinosin A (1) showed antimalarial activity against Plasmodium falciparum K1 (IC50 34 μM), whereas ...
Arunrat Yangchum, Malipan Sappan, Wilunda Choowong, Tuksaporn Thummarukcharoen, Thitiya Boonpratuang, Masahiko Isaka, Prapairat Seephonkai   +6 more
openaire   +2 more sources

ChemInform Abstract: Synthesis of Drimanes from (+)‐Larixol.

ChemInform, 2001
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Beatrice M. F. Lagnel, Christophe Morin, Aede De Groot   +2 more
openaire   +1 more source