The biosynthesis of C₅—C₂₀terpenoid compounds

Halogen Bonding and Other Iodine Interactions in Crystals of Dihydrothiazolo(oxazino)quinolinium Oligoiodides from the Electron-Density Viewpoint

“…So, we observe discoid ellipsoids for iodine halogen bonds. To a lesser extent it is typical for II bonds in I 2 molecule and I 3 – anion, which belong to the class of charge-shift bonds. , The highest anisotropy of the ellipsoid principal axes is observed for van der Waals iodine interactions. These discoid ellipsoids remain perpendicular to the bond path, but additionally, they are stretched along the negative charge belts of iodine atoms (see below).…”

A Concise Route to the Strongylophorines

“…Studies of terpenoid natural products continue to drive advances within structure determination, [1] biosynthesis, [2] and molecular pharmacology. [3] In addition, complex terpenoids are important synthetic targets,enabling biological investigations and subsequent discoveries.…”

Furfural Derivatives and Phenolic Constituents in Stemona tuberosa Lour

“…Among the above twenty‐six compounds, compounds 1 and 2 are two rare di‐furfural derivatives, compound 1 represents a previously undescribed one featuring a furanolactone ring, and compound 2 has been reported previously only from Rhizoctonia solani , [39] and processed Polygonatum cyrtonema Hua., [8] with anti‐inflammatory potential by inhibiting NO release in LPS‐induced RAW264.7 cells (IC 50 35.4 μ M). The known compounds 2 , 5 – 6 , 9 , and 15 – 16 were isolated from Stemona plants for the first time, revealing the chemical diversity of Stemona plants, while the simple phenolic compounds 19 – 26 have been reported to be widespread in plants of the genus Stemonae [14,26,33–36] . As reported to date, tuberostemonoxonine ( 3 ), [37,38] didehydrotuberostemonine A ( 4 ), [10] stilbostemin B 3′‐ β ‐D‐glucopyranoside ( 8 ), [14] and rutin ( 11 ) [39] have been isolated only from S. tuberosa among the three species [ S. tuberosa Lour., S. sessilifolia (Miq.)…”