David S. Rycroft

TL;DR: In this paper, the stereoselective total synthesis of the sesquiterpene herbertenediol (3) and of its naturally occurring dimers, mastigophorenes A [(P)-1] and B [(M)-1], is described.

TL;DR: In this article, a heteronuclear magnetic selective triple resonance technique for the determination of chemical shifts in incomplete spin systems is described and applied to the measurement of 77Se chemical shift in Organophosphorus selenides.

TL;DR: Vinyl alcohol with an OH group was generated under conditions of slow hydroxyl-proton exchange with 8 as the precursor in CD3COCD3 (99 v %)/H2O (1 v %) at −10 °C and the following coupling constants were evaluated: 3Jtrans = +14.0, 3Jcis = +6.3, 2Jgem = −0.12 and − 0.09 ppm for the α- and β-carbons under conditions where no such shifts were detectable for the corresponding carbons of ethyl vinyl

TL;DR: Comparisons of nrDNA ITS1 and ITS2 sequences of P. bifaria populations encompassing several different morpho- and chemotypes from the British Isles, Tenerife, Costa Rica, Brazil, Ecuador, and Bolivia, with sequences of other species show support for a broad morphological species concept, and shows that the different chemotypes do not warrant distinct taxonomic ranks.

TL;DR: Topologies generated from variable molecular markers are used to discuss biogeographical patterns in Herbertus and to compare them with the geological history of continents and outcomes reported for other land plants.