108102-94-9Relevant academic research and scientific papers
Studies on nepalese crude drugs. XXIII. On the diterpenoid constituents of the aerial parts of Scutellaria grossa wall
Ohno, Akiko,Kizu, Haruhisa,Tomimori, Tsuyoshi
, p. 1097 - 1100 (1997)
From the aerial parts of Scutellaria grossa, a new neoclerodane diterpene named scutegrossin A has been isolated together with five known neoclerodane diterpenes, jodrellin B, scutecolumnin A, scutalsin, scutecyprol B and scutalbin B. The structure of a new compound has been determined by spectroscopic and chemical methods as (11S, 13S, 16S, 19R)-6α-O-acetyl-19- O-[(E)-2-methyl-2-butenoyl]-2α, 19; 4α,18;11,16;15,16-tetraepoxy-14- neoclerodene-6,19-diol. In addition, the absolute stereochemistry of 2- methylbutanoyl group of scutecolumnin A and scutalbin B has been ascertained to be the S form.
Acylation reactions mediated by tantalum carboxylates
Joshi, Kiran,Bao, Jiang,Goldman, Alan S.,Kohn, Joachim
, p. 6649 - 6652 (2007/10/02)
Facile nucleophilic attack on coordinated carboxylate ligaods is reported: complexes of tantalum(V) react rapidly with amines and amino acid esters to give the corresponding amides. Cyclopentadienyltantalum(V) amino acid carboxylate complexes have been pr
Resin glycosides. XV. Simonins I-V, ether-soluble resin glycosides (jalapins) from the roots of Ipomoea batatas (cv. Simon)
Noda,Yoda,Kawasaki,Miyahara
, p. 3163 - 3168 (2007/10/02)
Five new ether-soluble resin glycosides (jalapins), simonins I-V, have been isolated from the roots of Ipomoea batatas and characterized on the bases of chemical and spectral data. Simonin I is the first example of resin glycoside with aromatic acid (trans-cinnamic acid) as a component organic acid.
