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  • Title: Structure of a lactone, (3 alpha,4 alpha,6 alpha)-4-(tert- butyldimethylsiloxy)-3,4,5,6-tetrahydro-6-methyl-3-(2-oxopropyl)- 2H- pyran-2-one.
    Author: Ammon HL, DeShong P, Simpson D.
    Journal: Acta Crystallogr C; 1991 Nov 15; 47 ( Pt 11)():2482-4. PubMed ID: 1805870.
    Abstract:
    C15H28O4Si, Mr = 300.5, monoclinic, P2(1)/a, a = 11.194 (4), b = 10.944 (3), c = 14.815 (5) A, beta = 95.01 (3) degrees, V = 1808 (2) A3, Dx = 1.104 g cm-3, Z = 4, lambda(Mo K alpha) = 0.71069 A, mu = 1.43 cm-1, F(000) = 656, T = 293 K, final R = 0.052, wR = 0.058 for 1630 reflections with I greater than 3 sigma(I). The valerolactone ring is in a boat conformation and the three ring substituents are cis.
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