A new octadecenoic acid

Conclusions It has been shown that the fatty oils of five species of Thalictrum contain trans-octadec-5-enoic acid. This acid may be regarded as a chemicophysiological classification index of plants of the genus Thalictrum.Khimiya Prirodnykh Soedinenii, Vol. 5, No. 4, pp. 214–216, 1969     

Enzymic control of stereochemistry among the Thalictrum bisbenzylisoquinoline alkaloids

The new bisbenzylisoquinolines (+)-tha1igrisine $\text{1}$ and (+)-tha1iphylline ($\text{6}$) have been isolated from $\text{Thalictrum minus}$ var. $\text{microphyllum}$. Four rules are described which correlate the structures of Thalictrum bisbenzylisoquinolines with their stereochemistry at C-1 and C-1'. As a result, (+)-tha1rugosamine is shown to be identical with (+)-homoaromo1ine ($\text{14}$). (+)-Thalisamine and (+)-N'-norhernandezine are also identical and are represented by expression $\text{18}$. The sole exception to the rules is (-)-isothalidezine ($\text{15}$).     

Hetisane - Type Diterpenoid Alkaloids

Data in the literature up to 1998 on hetisane-type diterpenoid alkaloids isolated from plants of the generaAconitum, Consolida, Delphinium, Thalictrum,andSpireaare reviewed and systematized. Data on the chemistry and physicochemical methods of studying the structures and pharmacology of hetisane alkaloids are generalized. An alphabetical list of 107 hetisane alkaloids with an indication of the plant source, structure, characteristic derivatives, physicochemical data, and references to the original literature is presented     

Two New Benzazepine Alkaloids from Thalictrum wangii and their Anti-Rotavirus Activity

Chemistry of Natural Compounds - Two new benzazepine alkaloids (1 and 2) were isolated from the whole plants of Thalictrum wangii. Their structures were determined by means of HR-ESI-MS and...     

Two New Anti-Tobacco Mosaic Virus Alkaloids from the Whole Plants of Thalictrum microgynum

Chemistry of Natural Compounds - Two new (1 and 2), together with four known (3–6) alkaloids were isolated from the whole plants of Thalictrum microgynum. Compounds 1–6 were tested for...     

Biosynthesis of aporphine - benzylisoquinoline alkaloids. I. Reticuline as a precursor of thalicarpine in thalictrum minus.

Reticuline considered as the most possible precursor of thalicarpine has been administered into intact plants of $\text{Thalictrum minus}$ and its incorporation established in both benzylisoquinoline and aporthine parts of this alkaloid.     

Triterpene saponins fromThalictrum minus. II. Structure of an artefact

The acid hydrolysis of the predominating saponins isolated fromThalictrum minu? L. has led to the formation of a triterpenoid (I), which is an artefact of the native genin. The structure of (I) has been established as 22,25-epoxylanost-9(11)-ene-3β,16β,29-triol.     

Structure of thalictoside

Thalictoside (I), a novel glycoside containing a nitro group, has been isolated from Thalictrum aquilegifolium and the structure has been established by chemical transformations, spectral analysis and synthesis.     

Alkaloids ofThalictrum simplex

Conclusions Eleven alkaloids have been isolated from the roots ofThalictrum simplex L. Thalicmine, thalicminine, -allocryptopine, and magnoflorine have been found in this species for the first time. Thalicmidine and thalictrisine are new alkaloids.The main alkaloids of this species of plant are hernandezine in the tertiary fraction and magnoflorine in the quaternary fraction.     

Four new triterpene glycosides from Thalictrum squarrosum

Four new triterpene glycosides were isolated from the dried aerial parts of Thalictrum squarrosum (Ranunculaceae). They were designated as squarroside I, being a cycloartane-type glycoside, and squarrosides II, III and IV, being oleanene-type glycosides. Their structures were established by using two dimensional (2D) NMR techniques.     

Triterpene saponins fromThalictrum minus. VII. Structure of thalicoside E

A new minor cycloartane glycoside — thalicoside E, 9,19-cyclo-20(S)-lanost-23-ene-3β,16β,22ζ,25,29-pentaol 3-O-β-D-galactoside 29-O-β-D-glucopyranoside — has been isolated from the epigeal part ofThalictrum minus L. (Ranunculaceae).     

Triterpene saponins fromThalictrum minus. V. Structure of thalicoside B

The epigeal part ofThalictrum minus L. has yielded a new bidesmoside — thalicoside B — which has the structure of oleanolic acid 28-O-β-D-glucopyranoside 3-O-[O-α-L-rhamnopyranosyl-(1 → 2)-O-β-D-glucopyranosyl-(1 → 3)-α-L-arabinopyranoside].     

Taxonomic Insights and Its Type Cyclization Correlation of Volatile Sesquiterpenes in Vitex Species and Potential Source Insecticidal Compounds: A Review

Sesquiterpenes (SS) are secondary metabolites formed by the bonding of 3 isoprene (C5) units. They play an important role in the defense and signaling of plants to adapt to the environment, face stress, and communicate with the outside world, and their evolutionary history is closely related to their physiological functions. This review considers their presence and extensively summarizes the 156 sesquiterpenes identified in Vitex taxa, emphasizing those with higher concentrations and frequency among species and correlating with the insecticidal activities and defensive responses reported in the literature. In addition, we classify the SS based on their chemical structures and addresses cyclization in biosynthetic origin. Most relevant sesquiterpenes of the Vitex genus are derived from the germacredienyl cation mainly via bicyclogermacrene and germacrene C, giving rise to aromadrendanes, a skeleton with the highest number of representative compounds in this genus, and 6,9-guaiadiene, respectively, indicating the production of 1.10-cyclizing sesquiterpene synthases. These enzymes can play an important role in the chemosystematics of the genus from their corresponding routes and cyclizations, constituting a new approach to chemotaxonomy. In conclusion, this review is a compilation of detailed information on the profile of sesquiterpene in the Vitex genus and, thus, points to new unexplored horizons for future research.     

Chemical composition of the essential oil of Thalectrum minus L. of Iran

The volatile constituents of the essential oil of Thalictrum minus L. growing wild in Kurdistan-Iran were investigated by GC and GC / MS technique. Twelve compounds, representing 100% of the total oil were identified. The main components were: Thymol (66.63%), para-Cymene (13.05%), gamma-Terpinene (7.32%), Carvacrol (3.70%), 1,8-Cineole (2.02%).     

Two-dimensional thin-layer chromatography with adsorbent gradient as a method of chromatographic fingerprinting of furanocoumarins for distinguishing selected varieties and forms of Heracleum spp

There are a lot of taxonomic classifications of the genus Heracleum, and many authors indicate they need revision. Morphological identification is difficult to perform, as there are only few characteristic differences between each Heracleum species, varieties and forms. Furanocoumarins are characteristic compounds for the Apiaceae family, and they can be found in the whole genus in large quantities. Despite this fact, it is difficult to use the furanocoumarin profiles of plants, for their discrimination, as furanocoumarins are difficult to separate, due to their similar chemical structures and physicochemical properties. In this paper, a new, simple method is proposed for the discrimination of selected species, varieties and forms of the genus Heracleum. Thin-layer chromatography (TLC) with an adsorbent gradient (unmodified silica gel+octadecylsilica wettable with water) enables complete separation of the structural analogues. The proposed method gives the possibility to distinguish selected species, varieties and forms of the Heracleum genus, as they produce distinctive furanocoumarin fingerprints. The method is characterised by high specificity, precision, reproducibility and stability values. It is for the first time that graft TLC is used for constructing fingerprints of herbs. The complete separation of ten structural analogues, by combining gradient TLC with the unidimensional multiple development technique, has not been reported yet.     

Triterpenes and limonoids of Cedrela: Distribution,biosynthesis, and 1H and 13C NMR data

Cedrela genus, a member of the Meliaceae family, presents both chemical characteristics associated with and those that distinguish it from the rest of its members. The presence of triterpenes and limonoids is the characteristic of the Meliaceae family, but the class and type of these chemical constituents are distinctive for each genus. Cedrela includes cycloartane, ursane, oleanane, tirucallane, butyrospermane, and apotirucallane triterpenes, and its limonoids belongs to six class and nine types, known as class Ia-type havanensines, class Ib-type delevoyin, class II-type gedunin, class IIIb-type andirobin, class IIIg-type mexicanolide, class IVa-type evoludone, class Va-type obacunol, class V-type limonin, and class VIII. Each of these structural arrangements includes specific traits, defined by their biosynthetic origin, which can be established by means of structural elucidation techniques, particularly ¹H and ¹³C NMR, which assisted by 2D NMR techniques, allowing to deduce their structures unequivocally. The constant presence of these skeletal arrangements in Cedrela ensures that they are its chemophenetic markers and their recurrence is an important criterion for their identity. This review is a compilation of the occurrence of triterpenes and limonoids in Cedrela genus, detailing their biosynthetic association and collecting and organizing their NMR data, with the purpose of facilitating its location, analysis, and use in the phytochemical study of species from this genus.     

Triterpene glycosides and their genins fromThalictrum foetidum. I. The structure of foetoside C

A new glycoside — foetoside C — has been isolated from the epigeal part ofThalictrum foetidum L. and, on the basis of chemical transformations and spectral characteristics its structure has been established as oleanolic acid 28-[O-α-D-glycopyranosyl-(1 → 6)-O-β-D-glucopyranoside] 3-O-[O-β-D-xylopyranosyl-(1 → 3)-O-α-L-rhamnopyranosyl-(1 → 2)-α-L-arabinopyranoside].     

Flavonoids ofThalictrum foetidum

Conclusions Two fluavonoid glucosides have been isolated from the herbThalictrum foetidum L.: rutin and a new flavonoid glucorhamnin with an aglycone rarely found in nature. Glucorhamnin has been characterized as rhamentin 3--D-glucopyranoside.Khimiya Prirodnykh Soedinenii, Vol. 5, No. 5, pp. 369–371, 1969     

Triterpene glycosides of Thalictrum squarrosum. II. Molecular and crystal structure of squarrofuric acid

The structure of squarrofuric acid (an artifactual genin fromThalictrum squarrosum) has been confirmed by x-ray structural analysis and the configurations of the C13, C14, C17, C20, and C22 asymmetric centers have been established, which has enabled this compound to be assigned to the lanostane series with the following structure: 3β,30-dihydroxy-20(S),22(S)-22,25-epoxylanost-9(11)-en-21-oic acid.     

小叶唐松草的两个新氧化阿朴芬类生物碱

Two new oxoaporphine alkaloids, 1,2,3,10-tetramethoxy-9-(2-hydroxy-4,5-dimethoxybenzyloxy)oxoaporphine (1) and 1,2,3,10-tetramethoxy-9-(4,5-dimethoxy-2-formylphenoxy)oxoaporphine (2), were isolated from Thalictrum elegans. Their structures were elucidated based on spectroscopic analysis including 1D, 2D NMR, IR and MS.