(9H-Fluoren-9-yl)methyl N-{(2R,3R,4S)-4-hy­droxy-2-[(2S,5R)-2-isopropyl-5-methyl­cyclo­hex­yloxy]-5-oxooxolan-3-yl}carbamate propan-2-ol 0.334-solvate

The title compound, C₂₉H₃₅NO₆.0.334C₃H₈O, a novel chiral N-(fluoren-9-yl­methyl­oxyxcarbon­yl) precursor, crystallizes with two independent carbamate (M) mol­ecules and propan-2-ol solvent mol­ecules in the unit cell. Its crystal structure has been determined from barely adequate data obtained from a multi-fragment needle crystal. In the crystal, N—H...O hydrogen bonds link M mol­ecules related by translation along the a axis into two independent chains. The ordered solvent mol­ecule, having a partial occupancy of 0.334, is attached to one independent M mol­ecule through O—H...O hydrogen bonds. The crystal packing exhibits weak inter­molecular C—H...O inter­actions and voids of 270 ų filled with randomly disordered solvent mol­ecules which were handled using the SQUEEZE methodology.

1D-1-O-tert-Butyl­diphenyl­silyl-2,3,6-O-tris­(meth­oxy­methyl­ene)-myo-inositol 4,5-bis­(dibenzyl­phosphate)

The title compound [systematic name: tetra­benzyl (1R,2R,3S,4R,5R,6S)-4-(tert-butyl­diphenyl­sil­yloxy)-3,5,6-tris­(meth­oxy­meth­oxy)cyclo­hexane-1,2-diyl bis­phosphate], C₅₆H₆₈O₁₅P₂Si, was isolated as an inter­mediate in the preparation of a phosphatidylinositol phosphate for biological studies. In the crystal, the mol­ecules are connected via one methyl­ene C—H...π and two weak phen­yl–ether C—H...O inter­actions. One benz­yloxy group is disordered over two overlapping positions with an occupancy ratio of 0.649 (7):0.351 (7).

(4R,5S)-4-Hy­droxy­meth­yl-5-[(methyl­sulfanyl)­meth­yl]-1,3-oxazolidin-2-one

The title compound, C₆H₁₁NO₃S, crystallizes utilizing a three-dimensional set of O—H...O, N—H...O and C—H...O hydrogen bonds. The 1,3-oxazolidin-2-one ring adopts an envelope conformation with the C atom bearing the hy­droxy­methyl group as the flap.

tert-Butyl (2R,4aR,5aR,11aS,12R,12aR)-8-[bis­(tert-but­oxycarbon­yl)amino]-12-hydroxy-2-meth­oxy-2,10-dioxo-4,4a,5a,6,9,10,11,11a,12,12a-deca­hydro-2H-1,3,5-trioxa-6,7,9,11-tetra­aza-2λ⁵-phosphatetra­cene-6-carboxyl­ate methanol monosolvate monohydrate

The title compound, C₂₆H₄₀N₅O₁₃P·CH₃OH·H₂O, crystallizes with one water and one methanol mol­ecule providing important crystal-binding inter­actions. The compound has the unusual feature of having two but­oxy­carbonyl groups bound to one N atom. The conventional attractive hydrogen bonds involving hy­droxy, amine and water donors include bifurcations at both donors and acceptors with novel R₁²(6) and R₂¹(6) motifs. These are supplemented by C—H...O inter­actions between adjacent mol­ecules forming chain and R₂²(10) ring motifs.

2-{3-Cyano-4-[2-(4-diethylamino-2-hy­droxyphenyl)ethenyl]-5,5-dimethyl-2,5-dihydrofuran-2-ylidene}malononitrile acetone 0.25-solvate

In the title compound, C₂₂H₂₂N₄O₂·0.25C₃H₆O, the disordered acetone mol­ecule lies with partial occupancy about the 2 axis. The mol­ecule of the malononitrile derivative is essentially planar excluding the methyl groups, with the largest deviation from the mean plane through the non-H atoms being 0.1955 (13) Å. Two rotamers with different orientations of the benzene ring are observed in the ratio of 0.919 (2):0.081 (2), and as a result the OH group is disordered over two sets of sites. In the crystal, the mol­ecules form ribbons along (101) utilizing a strong O—H...N(cyano) hydrogen bond. Inter­leaving of the nearly planar ribbons is provided by the twofold disordered acetone molecule through C—H...O inter­actions.