Phytoecdysteroids of plants of the genus Serratula. Ajugasterone C 20,22-monoacetonide from Serratura wolffii

The phytoectysteroids of the epigeal part of the plantSerratula wolffii Andrae have been investigated. The structure of a new ecdysteroid — ajugasterone C 20,22-monoacetonide has been established. Seven known acdysteroids have been isolated and identified.Institute of Biochemistry, Ukrainian Academy of Sciences, Kiev. Institute of Plant Substances, Uzbekistan Republic Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 71–76, January–February, 1992.     

Synthesis of protected oligopeptides representing fragements of histone fraction HI

Summary Protected oligopeptides corresponding to sequences (31–40) of histone fraction HI of rabbit thymus and (34–41) of histone fraction HI of calf thymus and a number of their analogs have been synthesized.Institute of Molecular Biology, Academy of Sciences of the USSR, Moscow. Institute of Chemistry, Academy of Sciences of the Tadzhik SSR, Dushanbe. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 87–93, January–February, 1977.     

Alkaloids of the cultivated species Aconitum tauricum

Mesaconitine, hypaconitine, and the new alkaloid taurenine have been isolated from the roots of the cultivated speciesAconitum tauricum, and the structure of taurenine has been established.Institute of Chemistry of Plant Substances, Uzbekistan Academy of Sciences. Polar-Alpine Botanical Garden, Kola Branch, Russian Academy of Sciences, Apatity. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 108–112, January–February, 1992.     

Essential oil ofArtemisia scoparia

The chemical composition of the essential oil of oriental wormwood growing in Kazathstan has been investigated. Of the components of the oil, 28 have been identified, and the structure of an acetylenic hydrocarbon has been refined.Institute of Chemical Sciences of the Academy of Sciences of the Kazakh SSR, Alma-Ata. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 560–564, September–October, 1981.     

Synthesis and study of the biological activity of fragments of salmon calcitonin II

A number of fragments of salmon calcitonin II possessing analgesic activity of the nonopioid type have been synthesized.Institute of High-Molecular-Mass Compounds, Russian Academy of Sciences. Institute of Experimental Medicine, Russian Academy of Medical Sciences, St. Petersburg. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 126–132, January–February, 1993.     

New derivatives of (?)-neocembrene from the soft coral Sarcophyton trocheliophorum

A hexane extract of the soft coralSarcophyton trocheliophorum has yielded two new diterpenoids for which the structures of 13S-hydroxy-(–)-neocembrene and 13S-hydroxy-11,12-epoxy-(–)-neocembrene have been established.Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR. Pacific Ocean Institute of Bioorganic Chemistry, Far Eastern Branch, Academy of Sciences of the USSR, Vladivostok. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 535–540, July–August, 1988.     

The structure and stereochemistry of teucrin A

Summary The structure of teucrin A has been confirmed by spectral and chemical methods and the relative configurations at all the asymmetric centers have been shown.Institute of Chemistry, Academy of Sciences of the Moldavian SSR. Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 169–175, March–April, 1973.     

The change in the globulins during the development of cotton seeds

The biosynthesis of the 11S and 7S globulins — the main reserve proteins of cotton seeds — has been investigated. The periods at which the globulins appear in cotton seeds have been established. The changes in the amino acid composition and in the secondary structure of the 11S globulin during the ripening of cotton seeds have been studied.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Institute of Molecular Biology, Academy of Sciences of the USSR, Moscow. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 349–355, May–June, 1984.     

Synthesis and membrane activity of new derivatives of 2,3-benzo-18-crown-6

The acylation of 2,3-benzo-18-crown-6 with carboxylic acids in the presence of polyphosphoric acid has given new acyl derivatives which have been reduced to the corresponding alkyl derivatives. The ionophoric activities of the compounds have been investigated on mitochondrial membranes.Institute of Biochemistry, Academy of Sciences of the Uzbek SSR, Tashkent. Institute of Bioorganic Chemistry, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 634–637, September–October, 1983.     

Chemical investigation ofHippopha? rhamnoides. II. Main components of the neutral reaction of the saponification products of an extract of the leaves of the sea buckthorn

The qualitative and quantitative compositions of the neutral fraction of the products of the saponification of a diethyl ether extract of a sea buckthorn leaves have been investigated. Fourteen triterpene compounds and eight aliphatic alcohols have been identified from the results of GLC, CMS, and PMR and also from their melting points.Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR. Institute of Catalysis, Siberian Branch, Academy of Sciences of the USSR, Novosibirsk. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 514–519, July–August, 1985.     

Synthetic and modified isoflavonoids IV. Synthesis of benzodioxepane analogues of pseudobaptigenin

Benzodioxepane analogues of pseudobaptigenin have been synthesized and their structures have been established by chemical transformations, elementary analysis, and PMR spectroscopsy.Taras Shevchenko Kiev University KIEN. Karakalpak Branch, Uzbekistan Academy of Sciences. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 814–820, November–December, 1993.     

First example of the formation of highly ordered supermolecular structures in a series of gibberellin derivatives

The 3-O-palmitate and 3-O-tridecanoate of gibberellin A₃ have been synthesized and monomolecular Langmuir-Blodgett films have been obtained from them.Novosibirsk Institute of Organic Chemistry, Siberian Division of the Russian Academy of Sciences. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 793–795, November–December, 1994.     

Synthetic analogs of natural flavolignans. II. A new synthesis of benzodioxepane analogs of silandrin and hydnocarpin

Benzodioxepane analogs of chalcones have been obtained from which analogs of natural flavolignans — silandrin and hydnocarpin — have been synthesized. The PMR spectra of the new substances are given and are discussed.KIEN, Karakalpak Division, Academy of Sciences of the Republic of Uzbekistan, Nukus. Taras Shevchenko Kiev University, Ukraine. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 480–483, July–August, 1994.     

Immobilization of Oospora lactis lipase

A number of new sorbents for the immobilization of lipases have been synthesized from Silokhrom and Porokhrom, and also from microcrystalline cellulose. The conditions for the immobilization of lipases have been selected and some of their properties have been studied.Institute of Microbiology, Uzbek SSR Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 729–732, September–October, 1988.     

Synthesis and structure of amino esters of menthol

The conditions for the acylation of (–)-menthol with monochloroacetyl chloride have been studied. Amino esters of (–)-menthol have been obtained by the nucleophilic replacement of the chlorine in (–)-menthol monochloroacetate by residues of secondary amines. Their properties and their mass, IR, and¹³C NMR spectra are described.Institute of Physical Organic Chemistry, Academy of Sciences of the Belorussian SSR, Minsk. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 728–733, November–December, 1981.     

Steroid saponins. XIII. The structure of alliumosides D and E fromAllium narcissiflorum

Summary Two new steroid glycosides of the furostanol series have been isolated fromAllium narcissiflorum Wills., and their structures have been shown.Institute of Chemistry, Academy of Sciences of the Moldavian SSR, Kishinev. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 184–188, March–April, 1976.     

Synthetic and modified isoflavonoids. XIII. Synthesis of analogues of fujikinin

Analogues of a natural isoflavone glycoside — fujikinin — have been synthesized. Their structures have been confirmed by their PMR spectra.Taras Shevenko Kiev University: KIEN, Karakalpak Division, Academy of Sciences of the Republic of Uzbekistan, Nukus. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 347–351, May–June, 1994.     

Synthesis and biological properties of bradykinin-potentiating peptides from snake venom

Summary A pentapeptide and undecapeptide possessing bradykinin-potentiating action have been synthesized, and they have been subjected to comparative pharmacological investigation.M. M. Shemyakin Institute of Bioorganic Chemistry, Academy of Sciences of the USSR. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 47–56, January–February, 1975.     

Iodine-containing complexes of the Black Sea algaPhyllophora nervosa

Iodine-containing complexes have been isolated from a Black Sea red alga. Information is given showing their carbohydrate nature. The causes of the hydrophobic peptide-peptide interaction in the complex are discussed.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Physicochemical Institute, Academy of Sciences of the Ukrainian SSR, Odessa. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 772–776, November–December, 1983.     

Alkaloids ofPetilium eduardi. Petine and petine N-oxide

Two new alkaloids — petine and petine N-oxide — have been isolated from the bulbs of Petilium eduardi. Their structures have been established on the basis of spectral characteristics and chemical transformations.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, FAX (3712) 89-14-75. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 524–528, July–August, 1994.