Results 81 to 90 of about 1,096 (185)
Kaurane diterpenes from the fruits of Zanthoxylum leprieurii (Rutaceae)
: 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)
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
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
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
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
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
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
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
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
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

