- MINOR AMIDES OF PIPER SPECIES
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Three new pyrrolidides, brachyamide A, brachyamide B and brachystine, have been isolated from Piper brachystachyum.The known amides, pipercide, retrofractamide A, and guineensine, the lignans pluviatilol, methyl pluviatilol (fargesin), sesamine, asarinine and the aromatic hydrocarbon pipataline, substituted cinnamic acids, methyl ester and sitosterol were also isolated and identified.Piper longum furnished a new long chain isobutyl amide, longamide, besides guineensine and the same lignans as isolated from P. brachystachyum.All the new piperamides were characterized by spectral studies and chemical degradation.Key Word Index-Piper Brachystachyum, P. longum; Piperaceae; pyrrolidides; brachyamide A; brachyamide B; brachystine, longamide; retrofractamide A; isobutyl amides; lignans; cinnamic acid derivatives; sitosterol.
- Koul, S. K.,Taneja, S. C.,Agarwal, V. K.,Dhar, K. L.
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- Synthesis of threitol ceramide and [14C]threitol ceramide, non-glycosidic analogues of the potent CD1d antigen α-galactosyl ceramide
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The synthesis of threitol ceramide, which is a non-glycosidic analogue of the potent CD1d antigen α-galactosyl ceramide, is described. The synthesis of a 14C-labelled threitol ceramide analogue is also presented. This radiolabelled analogue wil
- Garcia Diaz, Yoel R.,Wojno, Justyna,Cox, Liam R.,Besra, Gurdyal S.
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experimental part
p. 747 - 753
(2009/09/25)
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- Morpholinones as light stabilizers
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The invention relates to new compounds containing 1-8 active groups of the type 3,3,6,6-polysubstituted 2-morpholinone and having the formula F(A'-Z)m-X(F),wherein m is a number from 1 to 8; X is an organic anchor group of valency m and in case that m is not 1, X may also be a direct bond, SO2, P or PO; A' is a monovalent group of the formula E containing one linking group; Z is a direct bond, -O-, -S-, -SO-, -SO2- or -NR'14-; provided that Z is -O-, -S-, -SO-, -SO2- or -NR'14- if m is 1 and the linking group in formula E is G3 or G5; G1 is hydrogen; C1-C18alkyl; C2-C18alkyl substituted by OH and/or phenyl; oxyl; OH; C2-C12cyanoalkyl; C2-C12cyanoalkoxy; C1-C18alkoxy; C5-C12cycloalkoxy; C3-C8alkenyl; C3-C8alkynyl; C3-C8alkenyloxy; C7-C12phenylalkyl; C7-C12phenylalkyl substituted by hydroxy, C1-C4alkyl and/or C1-C4alkoxy; C7-C15phenylalkoxy; C7-C15phenylalkoxy, which is substituted by C1-C4alkyl and/or C1-C4alkoxy; or G1 is C1-C8alkanoyl; C3-C5alkenoyl; C1-C18alkanoyloxy; C3-C8epoxyalkyl; or G1 is the linking group -R10-; G2 and G4 are, independently of one another, C1-C18alkyl, C5-C12cycloalkenyl, C5-C12cycloalkyl, or an oligocyclic hydrocarbon residue of 6-12 carbon atoms; G3 is as defined for G2 or is C1-C8hydroxyalkyl; or G2 and G3 together are (CH2)e, where e is a number from 4 to 11; or G5 is the linking group -R5-; G5 is as defined for G4 or is C1-C8hydroxyalkyl; or G4 and G5 together are (CH2)e, where e is number from 4 to 11; or G5 is the linking group -R5-; G6 is as defined for G4 or is hydrogen; or G6 is the linking group, which is a direct bond or -R5-; and other residues are as defined in claim 1. The new compounds are effective as stabilizers for organic material, especially coatings, against harmful effects of light, oxygen and/or heat.
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- Identification of novel aliphatic compounds from Artabotrys odoratissimus (leaves)
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Three novel aliphatic compounds have been isolated and identified from the leaves of Artabotrys adoratissimus. The compounds have been characterised as nonacosanyl hexacosanoate 1, 2-hydroxytricontane 2, and pentatetracontan- 19-ol 3 by spectral and chemical analyses.
- Mehta,Jain, Preeti,Kotra, Shrilakshmi
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p. 1304 - 1306
(2007/10/03)
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- ALIPHATIC CONSTITUENTS FROM DUBOISIA MYOPOROIDES
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Four new compounds, isolated from the leaves and stem of Duboisia myoproides have been characterized as 6-methyldotriacontane, hentriacontanyl tetratriacontanoate, 3-hydroxydotriacontan-28-one and 4-pentatriacontanone, respectively, by spectral data and chemical studies.Key Word Index - Duboisia myoporoides; Solanaceae; leaves and stems; 6-methyldotriacontane; hentriacontanyl tetratriacontanoate; 3-hydroxydotriacontan-28-one; 4-pentatriacontanone.
- Shukla, Yogendra N.,Thakur, Raghunath S.
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p. 799 - 802
(2007/10/02)
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