LYCOPODIUM ALKALOIDS: XI. THE STRUCTURE AND REACTIONS OF ACRIFOLINE
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منابع مشابه
the underlying structure of language proficiency and the proficiency level
هدف از انجام این تخقیق بررسی رابطه احتمالی بین سطح مهارت زبان خارجی (foreign language proficiency) و ساختار مهارت زبان خارجی بود. تعداد 314 زبان آموز مونث و مذکر که عمدتا دانشجویان رشته های زبان انگلیسی در سطوح کارشناسی و کارشناسی ارشد بودند در این تحقیق شرکت کردند. از لحاظ سطح مهارت زبان خارجی شرکت کنندگان بسیار با هم متفاوت بودند، (75 نفر سطح پیشرفته، 113 نفر سطح متوسط، 126 سطح مقدماتی). کلا ...
15 صفحه اولThe Genus Diphasiastrum and Its Lycopodium Alkaloids.
The genus Diphasiastrum includes at least 23 species distributed primarily across the northern temperate and subarctic areas of the world. These plants produce an array of lycopodium alkaloids, and some species such as Diphasiastrum complanatum have been used in traditional medicine for ages for various conditions. Hybridization is common in this group of plants and they have always been a chal...
متن کاملLannotinidines H-J, new Lycopodium alkaloids from Lycopodium annotinum.
Three new Lycopodium alkaloids, lannotinidines H-J (1-3), were isolated from the club moss Lycopodium annotinum. The structures and relative stereochemistry of 1-3 were elucidated on the basis of spectroscopic data and the absolute stereochemistry of 2 was assigned by chemical correlation. Lannotinidine H (1) is the first Lycopodium alkaloid possessing a lycopodane skeleton with an additional C...
متن کاملTen new Lycopodium alkaloids having the lycopodane skeleton isolated from Lycopodium serratum Thunb.
Ten new alkaloids, lycoposerramines-F (1), -G (2), -H (3), -I (4), -J (5), -K (6), -L (7), -M (8), -N (9), and -O (10), having lycopodine-related structures, were isolated from the club moss Lycopodium serratum THUNB. and their structures were elucidated on the basis of spectroscopic analysis and/or chemical transformation.
متن کاملThe Ergot Alkaloids Xi. Isomeric Dihydrolysergic Acids and the Structure of Lysergic Acid by Walter
Lysergic acid is a substance which we have shown to be formed on hydrolysis of all of the known ergot alkaloids and must therefore occur as such or in the form of an isomer in each of these substances. From our degradation studies’ it has also been possible to arrive at a probable structure for lysergic acid, as given in the accompanying formula, and which appears to explain all of the known pr...
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ژورنال
عنوان ژورنال: Canadian Journal of Chemistry
سال: 1961
ISSN: 0008-4042,1480-3291
DOI: 10.1139/v61-278