The synthesis of some novel N-chloro-Δ1-4-azasteroids by efficient N-chlorination of azasteroid lactams with trichloroisocyanuric acid

1991 ◽  
Vol 69 (9) ◽  
pp. 1482-1486 ◽  
Author(s):  
Thomas G. Back ◽  
Joseph H.-L. Chau ◽  
Brian P. Dyck ◽  
Patricia L. Gladstone
Keyword(s):  
Key Words ◽  
High Yield ◽  
Principal Product ◽  
Chloro Derivative ◽  
Trichloroisocyanuric Acid

The preparation of N-chloro-Δ1-4-azasteroids 2a–2c from lactams 1a–1c was achieved conveniently and in high yield with trichloroisocyanuric acid. The treatment of 20β-hydroxy-4-aza-5α-pregn-1-en-3-one (1d) with this reagent produced the less stable N-chloro compound 2d, which reacted further to afford 4-aza-5α-pregn-1-en-3,20-dione (4) as the principal product. The similar chlorination of 4-azacholest-5-en-3-one (5) occurred at C-6, giving 6-chloro-4-azacholest-5-en-3-one (6). Photolysis of N-chloro-4-aza-5α-cholest-1-en-3-one (2a) in methanol produced the transient N-acyl imine 7, which was trapped by the solvent to afford 5-methoxy-4-azacholest-1-en-3-one (8), along with 4-azacholesta-1,5-dien-3-one (9) and its 6-chloro derivative 10. Key words: N-chloroazasteroid, Δ1-4-azasteroid, N-chloro-Δ1-4-azasteroid, trichloroisocyanuric acid, N-chlorination.

AC Burman barley

1992 ◽  
Vol 72 (2) ◽  
pp. 473-475
Author(s):  
K. M. Ho ◽  
T. M. Choo ◽  
R. A. Martin
Keyword(s):  
Hordeum Vulgare ◽  
Key Words ◽  
Test Weight ◽  
High Yield ◽  
Loose Smut ◽  
Hordeum Vulgare L ◽  
Eastern Canada ◽  
Good Test ◽  
Barley Breeding ◽  
Moderately Resistant

AC Burman is a six-rowed spring feed barley (Hordeum vulgare L.) cultivar developed by the Eastern Canada Barley Breeding Group, Agriculture Canada and is adapted to Eastern Canada. It was selected from a Leger/Bruce/2/2*Leger cross. AC Burman has high yield, good test weight and is moderately resistant to loose smut (Ustilago nuda (Jens.) Rostr.).Key words: Hordeum vulgare L., six-rowed barley, feed barley, high yield

EFFECTIVENESS OF ZINC FERTILIZER SOURCES ON NUTRITION OF BEANS

1986 ◽  
Vol 66 (1) ◽  
pp. 183-187 ◽  
Author(s):  
J. P. SINGH ◽  
J. W. B. STEWART ◽  
R. E. KARAMANOS ◽  
N. G. LEWIS
Keyword(s):  
Key Words ◽  
Biomass Production ◽  
Relative Effectiveness ◽  
High Yield ◽  
Zn Deficiency ◽  
Spent Sulphite Liquor ◽  
Incubation Experiments ◽  
Bean Plants ◽  
Zn Content ◽  
Zinc Fertilizer

The relative effectiveness of Zn-sulphate (ZnS), Zn-EDTA (ZnE), low-yield ammonium-based lignosulphonate (ZnLY) and high-yield sodium-based lignosulphonate (ZnHY) for bean production was tested in growth chamber and incubation experiments. ZnS and ZnLY were more effective than ZnE and ZnHY in correcting Zn deficiency of bean plants. While biomass production was best with ZnS, ZnLY was more effective in increasing Zn-content in the foliage and in the formation of strong chelates in the soil. Key words: Zn-sulfate, Zn-EDTA, lignosulphonate, spent sulphite liquor, sulphite pulping

BALDWIN OAT

1987 ◽  
Vol 67 (2) ◽  
pp. 499-501
Author(s):  
HAROLD R. KLINCK
Keyword(s):  
Key Words ◽  
Avena Sativa ◽  
Test Weight ◽  
High Yield ◽  
Eastern Canada ◽  
Early Maturity ◽  
Hull Content ◽  
Mcgill University ◽  
High Test

Baldwin is a white-hulled oat (Avetia sativa L.) cultivar with high yield, high test weight, low hull content and early maturity. It was developed at Macdonald College of McGill University and is adapted to eastern Canada. This cultivar was granted license no. 2563 in November 1985.Key words: Oat, Avena sativa L., high test weight

AC Alma barley

1997 ◽  
Vol 77 (4) ◽  
pp. 635-637 ◽  
Author(s):  
T. M. Choo ◽  
R. A. Martin ◽  
K. M. Ho ◽  
G. Atlin ◽  
R. Walton ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Key Words ◽  
High Yield ◽  
Hordeum Vulgare L ◽  
Eastern Canada ◽  
Lodging Resistance ◽  
Barley Breeding ◽  
Breeding Group ◽  
Key Words Barley ◽  
Cultivar Description

AC Alma is a six-row, spring feed barley (Hordeum vulgare L.) cultivar developed by the Eastern Canada Barley Breeding Group, Agriculture and Agri-Food Canada. It has high yield and excellent lodging resistance. AC Alma performed well across Eastern Canada. Key words: Barley, Hordeum vulgare L., cultivar description, high yield, lodging resistance

OAC Paisley oat

1997 ◽  
Vol 77 (4) ◽  
pp. 645-646
Author(s):  
D. E. Falk ◽  
G. Meatherall ◽  
E. Reinbergs
Keyword(s):  
Key Words ◽  
Avena Sativa ◽  
Crown Rust ◽  
High Yield ◽  
Science Department ◽  
Eastern Canada ◽  
Atlantic Region ◽  
Lodging Resistance ◽  
Early Maturity ◽  
Good Tolerance

OAC Paisley is a high yielding, lodging resistant, covered oat developed at the Crop Science Department, OAC, University of Guelph. OAC Paisley was selected from the cross of Ogle/OA630-2. It has outyielded the check cultivars over 29 station-years of testing in Ontario, Quebec and the Atlantic Region. OAC Paisley is well adapted to all of Eastern Canada. It has resistance to BYDV and good tolerance to septoria, but is susceptible to crown rust. It should fit well into barley-oat mixtures due to its early maturity and lodging resistance. Key words: Avena sativa L., high yield, lodging resistance, BYDV, septoria

Morrison barley

1991 ◽  
Vol 71 (1) ◽  
pp. 187-188
Author(s):  
K. M. Ho
Keyword(s):  
Hordeum Vulgare ◽  
Powdery Mildew ◽  
Key Words ◽  
High Yield ◽  
Research Centre ◽  
Hordeum Vulgare L ◽  
Eastern Canada ◽  
Lodging Resistance ◽  
High Degree ◽  
High Test

Morrison is a two-rowed spring feed barley (Hordeum vulgare L.) cultivar developed by the Plant Research Centre, Agriculture Canada, Ottawa. It was selected from a Rodeo/Gitane cross. Morrison has high yield, high test weight, large kernels, good lodging resistance and a high degree of resistance to powdery mildew (Erysiphe graminis D.C.). It is suitable for growing in Eastern Canada. Key words: Hordeum vulgare L., two-rowed barley, feed barley, high yield

AC Stephen barley

1993 ◽  
Vol 73 (4) ◽  
pp. 1079-1081
Author(s):  
K. M. Ho ◽  
W. L. Seaman ◽  
T. M. Choo ◽  
R. A. Martin
Keyword(s):  
Hordeum Vulgare ◽  
Powdery Mildew ◽  
Key Words ◽  
Erysiphe Graminis ◽  
Test Weight ◽  
High Yield ◽  
Hordeum Vulgare L ◽  
Eastern Canada ◽  
Good Test ◽  
Barley Breeding

AC Stephen is a six-rowed spring feed barley (Hordeum vulgare L.) cultivar developed by the Eastern Canada Barley Breeding Group, Agriculture Canada, and is adapted to Eastern Canada. It was selected from an OAC Kippen/Léger cross. AC Stephen has high yield, good test weight and is resistant to powdery mildew (Erysiphe graminis DC. ex Merat. f. sp. hordei Em. Marchal). Key words: Hordeum vulgare L., six-rowed barley, feed barley, high yield, powdery mildew

The Preparation of Hexamethylcyclotriphosphazene

1975 ◽  
Vol 53 (20) ◽  
pp. 3038-3039 ◽  
Author(s):  
Richard T. Oakley ◽  
Norman L. Paddock
Keyword(s):  
High Yield ◽  
Simple Method ◽  
Principal Product ◽  
Methylamine Hydrochloride

Dimethyltrichlorophosphorane reacts with methylamine hydrochloride to give an oil which decomposes on heating, yielding the quaternary chloride N3P3Me6·MeCl as the principal product. The controlled pyrolysis of this salt gives N3P3Me6 in high yield. A simple method for the separation of N3P3Me6 and N4P4Me8 is described, based on the different solubilities of their salts in acetonitrile.

scholarly journals Synthesis of Some Biologically Important 3-Oxacepham Derivatives

1970 ◽  
Vol 5 (1) ◽  
pp. 47-51 ◽  
Author(s):  
Mohammad Rafiqul Islam ◽  
Mohammad Nurnabi ◽  
AM Sarwaruddin Chowdhury ◽  
Mohammad Mehdi Masud
Keyword(s):  
Key Words ◽  
Full Text ◽  
Crystallographic Analysis ◽  
High Yield ◽  
Methyl Group ◽  
X Ray ◽  
Tert Butyl ◽  
Relative Stereochemistry

The 6H-oxathiazines 1a-e having imine moiety underwent [2+2] cycloaddition with phenoxyacetylchloride in the presence of Et3N to give β-lactam derivatives 2a-e in high yield. The X-ray crystallographic analysis revealed the relative stereochemistry that the substituents at C-2 and C-4 were cis configurated. The subtituents at C-6 and C-7 were also cis to each other. However, the 6H-oxathiazines 1f-i containing tert-butyl or methyl group at C-4 did not undergo the cycloaddition. Key words: Azetedinone, β-lactam, oxacepham, cycloaddition, imine, ketene, oxathiazine. Dhaka Univ. J. Pharm. Sci. Vol.5(1-2) 2006 The full text is of this article is available at the Dhaka Univ. J. Pharm. Sci. website

CT166 flue-cured tobacco

2000 ◽  
Vol 80 (1) ◽  
pp. 165-166
Author(s):  
H. M. Haji ◽  
S. Mishra ◽  
M. Devos
Keyword(s):  
Nicotiana Tabacum ◽  
Key Words ◽  
Quality Characteristic ◽  
High Yield ◽  
Nicotiana Tabacum L ◽  
Cultivar Description ◽  
Tobacco Cultivar

CT166 is a flue-cured tobacco (Nicotiana tabacum L.) cultivar with high yield, and matures earlier than the standard checks. Percent alkaloids in CT166 is significantly lower than the checks. Lower alkaloids is a desirable quality characteristic. Key words: Nicotiana tabacum L., tobacco, cultivar description

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