Results 81 to 90 of about 1,096 (185)

Kaurane diterpenes from the fruits of Zanthoxylum leprieurii (Rutaceae)

open access: yes
: The fruits of Zanthoxylum leprieurii Guill. & Perr. (Rutaceae) are traditionally used in Africa, particularly in Cameroon, as a spice and in the treatment of sickle cell anaemia.
Ritchie, KJ   +6 more
core  

Kaurane diterpenes from the fruits of Zanthoxylum leprieurii (Rutaceae)

open access: yes, 2017
Abstract: The fruits of Zanthoxylum leprieurii Guill. & Perr. (Rutaceae) are traditionally used in Africa, particularly in Cameroon, as a spice and in the treatment of sickle cell anaemia. Phytochemical investigation on the fruits of this plant afforded five kaurane diterpenes, i.e., kaurenoic acid (1), xylopic acid (2), ent-kauran-16β-ol (3), ent-16β ...
Guetchueng, ST   +6 more
openaire  

Ecological role and biosynthesis of coffee seed diterpenes

open access: yes, 2022
Species of the genus Coffea accumulate diterpenes of the ent-kaurane family in the endosperm of their seeds, of which cafestol and kahweol are the most abundant (ca. 1-2% DW).
Tissier, Alain   +11 more
core   +1 more source

Studies on chemical constituents of the leaves of Smallantus sonchifolius (yacon): Structures of two new diterpenes

open access: yes, 2010
The extract from the leaves of Smallantus sonchifolius (yacon) was found to show potent anti-diabetic activity. Two new diterpenes, named ent-kaurane-3 beta,16 beta,17,19-tetrol (1) and ent-kaurane-16 beta,17,18,19-tetrol (2), were isolated from the ...
Xiang, Z.   +7 more
core  

Diterpenes from Achillea clypeolata

open access: yes, 1996
The isolation of 16 alpha,17-epoxy-ent-kaurane (a known compound), 3 alpha-acetoxy-16 alpha,17-epoxy-ent-kaurane and 19-acetoxy-16 alpha,17-epoxy-ent-kaurane from roots of Achillea clypeolata is reported.
Ranđelović, N   +8 more
core   +1 more source

Isolation and HPLC quantitation of kaurane-type diterpenes and cinnamic acid derivatives of long-term stored leaves of Mikania laevigata and Mikania glomerata

open access: yesAnais da Academia Brasileira de Ciências, 2013
The leaves of Mikania laevigata and Mikania glomerata are used in Brazil to treat respiratory affections, being kaurane-type diterpenes and coumarin considered as the bioactive compounds.
SUZAN K.V. BERTOLUCCI   +4 more
doaj  

The chemistry of the Euphorbiaceae. XIX. Diterpene and flavonoid constituents of Beyeria latifolia

open access: yes, 1968
Structures have been established for three new diterpenes, 16,8-(-)-kaurane-3α,16,17,19-tetrol (XVII), 16β-( -)-kaurane-3α,l6,19-trio1 (XXIII), and 16β-(-)-kaurane-3α,l6,17-trio1 (111), which have been obtained from B.
PR Jefferies, RW Retallack
core   +1 more source

Asymmetric Synthesis of the Main Core of Kaurane Family Members Triggered by an Oxidative Polycyclization–Pinacol Tandem Process

open access: yes, 2016
Polycyclization processes represent expeditious routes used in both nature and the laboratory to produce complex polycyclic molecules. A new stereoselective oxidative variant of such a polycyclization has been developed in which the cascade is triggered ...
Samuel Desjardins (1748665)   +2 more
core   +1 more source

A general survey and some taxonomic implications of diterpenes in the Asteraceae

open access: yes, 2005
This paper provides a general survey of the occurrence of diterpenes in the Asteraceae. Data on 4351 botanical occurrences were obtained from the literature. These were grouped by skeleton for each genus. Then, the genera were grouped by subtribes, which,
Ferreira, MJP   +3 more
core   +1 more source

Isolation of two cytotoxic diterpenes from the fern Pteris multifida

open access: yes, 1996
From aerial parts of the fern Pteris multifida Poir. (Polypodiaceae) two diterpenes, ent-kaurane-2 beta,16 alpha-diol and ent-kaur-16-ene-2 beta,15 alpha-diol, were isolated by repeated column chromatography using silica gel and silica gel impregnated ...
Pras, N   +9 more
core  

Home - About - Disclaimer - Privacy