Synthesis of certain benzylidene derivatives of lagochilin
作者:U. N. Zainutdinov、D. N. Dalimov、T. K. Yunusov、O. D. Matchanov
DOI:10.1007/bf02238335
日期:2000.5
Methods for preparing certain aromatic acetals of 3,15,16,18-tetrahydroxy-9,13-epoxylabdane are described. The structures of the resulting acetals are confirmed by IR and PMR spectra. Certain physicochemical constants of the compounds are presented.
描述了制备 3,15,16,18-四羟基-9,13-环氧拉丹的某些芳香缩醛的方法。所得缩醛的结构通过 IR 和 PMR 光谱证实。给出了化合物的某些物理化学常数。
Structure of 18-de(hydroxymethyl)-3-O-3′; 3-O-18′-dilagohirsin — A product of the dehydration of lagochilin
作者:U. N. Zainutdinov、S. A. Talipov、F. G. Kamaev、B. T. Ibragimov、L. Yu. Izotova、B. Bekbulatova、M. A. Safaev
DOI:10.1007/bf02234852
日期:1999.5
The structure of a dimeric dehydrationproduct of the diterpenoid lagochilin — 18-de(hydroxymethyl)-3-O-3′;3-O-18′-dilagohirsin — has been investigated by PMR spectroscopy and x-ray structural analysis. It has ben established that the molecule of this compound has an unsymmetrical dimeric linkage of two fragments of the lagohirsin molecule with the participation of the C3 and C4 carbon atoms of one
作者:A. S. Mengliev、U. N. Zainutdinov、N. N. Stepanichenko、S. A. Auelbekov、Kh. A. Aslanov
DOI:10.1007/bf01167574
日期:1995.1
Site-selective oxidation, amination and epimerization reactions of complex polyols enabled by transfer hydrogenation
作者:Christopher K. Hill、John F. Hartwig
DOI:10.1038/nchem.2835
日期:2017.12
for selective reactions of complex polyol structures. We present a new ruthenium catalyst with a unique efficacy for the selective oxidation of a single hydroxyl group among many in unprotected polyol natural products. This oxidation enables the introduction of nitrogen-based functional groups into such structures that lack nitrogen atoms and enables a selective alcohol epimerization by stepwise or
Preparation and Physicochemical and Biological Properties of Molecular Associates of Lagochilin and Lagochirsine with Glycyrrhizic Acid and its Monoammonium Salt
作者:A. D. Matchanov、D. N. Dalimov、U. N. Zainutdinov、N. L. Vypova、A. Kh. Islamov、B. M. Bekpolatova
DOI:10.1007/s10600-017-2086-0
日期:2017.7
Molecular associates of lagochilin and lagochirsine with glycyrrhizic acid and its monoammonium salt in various molar ratios were prepared. Their IR spectra, several physicochemical properties, and hemostatic activities were discussed.