Unusual ent-isopimarane-type diterpenoids from the wood of Excoecaria agallocha

  title={Unusual ent-isopimarane-type diterpenoids from the wood of Excoecaria agallocha},
  author={Mangala Gowri Ponnapalli and Madhu Ankireddy and Suresh Annam and Saidulu Ravirala and Sushma Sukki and Venugopal Raju Tuniki},
  journal={Tetrahedron Letters},
Isomeric ent‐Labdane‐Type Diterpenoids from the Stems of Rhizophora mucronata
Two new constitutional isomers of ent-labdane-type diterpenoids, 1 and 2, with an unusual seven-membered lactone moiety (i.e., 1), together with two known compounds, 3 and 4, were isolated from the
A New 28-Nor-oleanane Triterpene from Excoecaria agallocha
A new 28-nor-oleanane triterpene, 28-nor-olean-2α, 3β-dihydroxy-14,17-diene-16-one with a rare cyclohexa-2,5-dienone moiety, together with three known triterpenes, viz.β-amyrin (2), 3α-O -trans
Bioactive Pimarane‐Type Diterpenes from Marine Organisms
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Mangrove Tirucallane- and Apotirucallane-Type Triterpenoids: Structure Diversity of the C-17 Side-Chain and Natural Agonists of Human Farnesoid/Pregnane–X–Receptor
Ten new triterpenoid compounds with structure diversity of the C-17 side-chain, including nine tirucallanes, named xylocarpols A–E (1–5) and agallochols A–D (6–9), and an apotirucallane, named
Diterpenoids of terrestrial origin.
This review covers the isolation and chemistry of diterpenoids from terrestrial as opposed to marine sources and includes labdanes, clerodanes, abietanes, pimaranes, kauranes, cembranes and their cyclization products.
Mangrove Plants as a Source of Bioactive Compounds: A Review
The achievements and progress in mangroves natural products research of the last decade are compiled and showed promising biological activities such as gastroprotective, cytotoxic, antioxidant, antibacterial, antifungal, antiviral, enzyme activation and inhibition, immunosuppressive, anti-inflammatory, antifeedant effects.


New bis-secolabdane diterpenoids from Excoecaria agallocha.
Two new bis-secolabdane diterpenoids, excoecarins R1 and R2, were isolated from the resinous wood of Excoecaria agallocha and established on the basis of spectroscopic data interpretation and chemical evidence.
Three New ent-Labdane Diterpenoids from the Wood of Excoecaria agallocha LINN.
An extensive study of metabolites present in Excoecaria agallochaLinn. led to the isolation of three new ent-labdane-type diterpenoids, named agallochaexcoerins A–C (1–3), besides three known
Agallochaols a and b, two new diterpenes from the chinese mangrove Excoecaria agallocha L.
Two new ent-isopimarane diterpenoids, agallochaols A (1) and B (2), were isolated from the dried stems and leaves of the mangrove Excoecaria agallochaL. Their structures were established on the basis
A new isopimarane-type diterpene and a new natural atisane-type diterpene from Excoecaria agallocha
From the woods of Excoecaria agallocha, a new isopimarane-type diterpene, 3α,11β-dihydroxy-ent-isopimara-8(14),15-dien-2-one (1) and a new natural atisane-type diterpene, 16β-hydroxy-ent-atisan-3-one
Unusual isomeric corniculatolides from mangrove, Aegiceras corniculatum.
Four new isomeric macrolides of combretastatin D-2 congeners named isocorniculatolide A, 11-O-methylisocorno-methylcornicULatolides A, and 12-hydroxy-11- O-methyl cornicul atolide B are isolated from the CHCl(3) extract of the bark of Aegiceras corniculatum.
Oleanane-type isomeric triterpenoids from Barringtonia racemosa.
Two new isomeric acylated oleanane-type triterpenoids along with three known compounds were isolated from the MeOH extract of the dried fruits of Barringtonia racemosa and were not active against HeLa and P388 D1 carcinoma cell lines.
Three diterpenoids (excoecarins V1-V3) and a flavanone glycoside from the fresh stem of Excoecaria agallocha.
Three new diterpenoids, excoecarins V1-V3 (1-3) and a new flavanone glycoside (7) were isolated from the fresh stem of Excoecaria agallocha L. Their structures were elucidated as:
ent-Kaurane and beyerane diterpenoids from Excoecaria agallocha.
The roots of Excoecaria agallocha yielded four new diterpenoids, ent-3 beta,20-epoxy-3 alpha,6 alpha-dihydroxykaur-16-ene and ent-kauran-16 beta-ol-3-one, which were determined by spectroscopic (NMR and MS) data interpretation.