Isomeric  ent ‐Labdane‐Type Diterpenoids from the Stems of  Rhizophora mucronata | Zendy

Madhu Ankireddy | Zendy; Suresh Chandra Venkata Appa Rao Annam | Zendy; Sushma Sukki | Zendy; Mangala Gowri Ponnapalli | Zendy; Venugopal Raju Tuniki | Zendy

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Isomeric ent ‐Labdane‐Type Diterpenoids from the Stems of Rhizophora mucronata

Author(s) -

Madhu Ankireddy,

Suresh Chandra Venkata Appa Rao Annam,

Sushma Sukki,

Mangala Gowri Ponnapalli,

Venugopal Raju Tuniki

Publication year - 2014

Publication title -

helvetica chimica acta

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.74

H-Index - 82

eISSN - 1522-2675

pISSN - 0018-019X

DOI - 10.1002/hlca.201400022

Subject(s) - labdane , rhizophora mucronata , chemistry , moiety , stereochemistry , absolute configuration , diterpene , mangrove , ecology , biology

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 acetone extract of Rhizophora mucronata. Their structures were elucidated as rhizomucronol A and B ( 1 and 2 , resp.) by spectroscopic analyses and chemical evidence. The absolute configuration of 2 was established by applying the Mosher ester procedure.

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