Sterols of some Clerodendrum species (verbenaceae): Occurrence of the 24α- and 24β-epimers of 24-ethylsterols lacking a Δ 25-bond

  title={Sterols of some Clerodendrum species (verbenaceae): Occurrence of the 24$\alpha$- and 24$\beta$-epimers of 24-ethylsterols lacking a $\Delta$
  author={Toshihiro Akihisa and Yuzuru Matsubara and Parthasarathi Ghosh and Swapnadip Thakur and Toshitake Tamura and Taro Matsumoto},

Sterols ofKalanchoe pinnata: First report of the isolation of both C-24 epimers of 24-alkyl-Δ25-sterols from a higher plant

Iodine-catalyzed isomerization of stigmasta-5,24-dien-3β-ol, the main sterol of K. pinnata, yielded 24-epiclerosterol among other products, the first report of the isolation of both C-24 epimers of Δ25-unsaturated 24-alkylsterols from a non-marine organism.

(22Z,24S)-Stigmasta-5,22,25-trien-3β-ol and other novel sterols from Clerodendrum scandens: first report of the isolation of a cis-Δ22-unsaturated sterol from a higher plant

(22Z,24S)-Stigmasta-5,22,25-trien-3β-ol was isolated from Clerodendrum scandens(Verbenaceae). It is only the second example of a naturally occurring Z-Δ22-unsaturated sterol. Four other novel sterols

Biosynthesis of the 24-methylcholesterols dihydrobrassicasterol and campesterol in cultured cells of Amsonia elliptica: incorporation of [1,2-13C2]acetate and [2-13C,2H3]acetate

Feeding experiments with [1,2-13C2]acetate and [2-13C,2H3]acetate in suspension cultures of A. elliptica demonstrate that campesterol has C-26 (the pro-R methyl group at C-25) and C-27 (the pro-S



Sterol compositions of seeds and mature plants of family cucurbitaceae

The sterol fractions of the unsaponifiable lipids obtained from 32 seed and mature plant materials from the 12 generaApodanthera, Benincasa, Citrullus, Coccinea, Cucurbita, Gynostemma, Lagenaria, Luffa, Momordica, Sechium and Trichosanthes were investigated by gas liquid chromatography.

Identification of C-24 alkyl epimers of marine sterols by 13C nuclear magnetic resonance spectroscopy

13C nuclear magnetic resonance spectra of diastereomeric C-24 alkyl sterols have been assigned. Differences in the chemical shifts of side-chain carbons permitted the determination of the absolute