Results 221 to 230 of about 22,763 (259)
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Wallenone, a C32 triterpenoid from the leaves of Gyrinops walla
Phytochemistry, 1986Abstract Wallenone, a new C 32 tirucallane-type triterpene isolated from the leaves of Gyrinops walla , has been shown to be 24-methylene-25-methyltirucall-7-en-3-one through X-ray crystallographic analysis and 2D-NMR spectroscopy.
Yeh Schun +3 more
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Selective synthesis of C32- and C20-monoiodinated chlorophyll derivatives
Tetrahedron Letters, 2015Abstract A chlorophyll derivative possessing an iodine atom at the C3-moiety was synthesized from methyl pyropheophorbide- a for the first time using phenyliodine bis(trifluoroacetate) and I 2 . The use of larger amounts of reagents resulted in additional iodination at the C20-position, thus affording the 3,20-diiodo derivative.
Toru Oba +4 more
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Orthorhombic C32: A topological semimetal with nodal ring
Physics Letters A, 2022Ye Tao, Kun Bu, Jian-Tao Wang
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The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements. They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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A stereoselective synthesis of the C16-C32 fragment of ionomycin
2010This dissertation concerns the stereoselective synthesis of optically pure compound 196, the C₁₆-C₃₂ fragment of the polyether antibiotic ionomycin (1). Fragment 196 was synthesized by preparing and joining the two subunits 172 (C₁₆-C₂₂) and 122 (C₁₆-C₃₂).
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The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements. They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements. They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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