OCCURRENCE OF 2,7-DIHYDROXY-4-ISOPROPYL-2,4,6-CYCLOHEPTATRIEN-1-ONE (7-HYDROXY-4-ISOPROPYLTROPOLONE) IN WESTERN RED CEDAR (THUJA PLICATA DONN.)
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چکیده
منابع مشابه
Leaf longevity of western red cedar (Thuja plicata) increases with depth in the canopy.
Leaf longevity determines the annual cost of replacing foliage biomass and influences water and nutrient budgets. Longevity is readily estimated in most evergreen species by annual bud scars along the shoot. However, some species with indeterminate growth do not show these annual markers, making estimation of longevity difficult. One of these species is the widespread and economically valuable ...
متن کاملOccupational asthma and rhinitis due to Western red cedar (Thuja plicata), with special reference to bronchial reactivity.
Gandevia, B., and Milne, J. (1970). Brit. J. industr. Med., 27, 235-244. Occupational asthma and rhinitis due to Western red cedar (Thuja plicata), with special reference to bronchial reactivity. With the increasing use of Western, or Canadian, red cedar (Thuja plicata) in the timber industry, a distinctive respiratory syndrome of rhinitis and asthma has been observed with increasing frequency ...
متن کاملSYNTHESIS OF (k) - 6,8-DIHYDROXY-3- ISOPROPYL-7-METHYLISOCHROMAN
The title isochroman ( 8 ) was synthesized as a suitable substrate for acetoxylation studies leading to an intermediate of type (4), expected to afford, on condensation with diketen, the fungal metabolite "rotiorin" type linear product (1). Cyclocondensation of alcohol (6), obtained by the reduction of ketone (5) with paraform in the presence of anhydrous aluminum chloride afforded the dim...
متن کامل3-Isopropyl-2,6-bis(4-methoxyphenyl)piperidin-4-one
In the title compound, C(22)H(27)NO(3), the piperidine ring adopts a slightly distorted chair conformation. The dihedral angle between the two aromatic rings is 60.4 (1)°. In the crystal, the amino group forms a rather long N-H⋯O contact to a methoxy O atom. There are also C-H⋯O interactions present.
متن کامل2-Isopropyl-6-methylpyrimidin-4(3H)-one
The mol-ecular structure of the title compound, C(8)H(12)N(2)O, indicates that 2-isopropyl-6-methyl-pyrimidin-4-ol (the enol-form) undergoes an enol-to-keto tautomerism during the crystallization process. The pyrimidin-4(3H)-one group is essentially planar, with a maximum deviation of 0.081 (1) Å for the O atom. In the crystal structure, symmetry-related mol-ecules are linked into centrosymmeti...
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ژورنال
عنوان ژورنال: Canadian Journal of Chemistry
سال: 1957
ISSN: 0008-4042,1480-3291
DOI: 10.1139/v57-141