Lagerstroemia

Figure 1. Continued. Lattice structure in crape myrtle (Lagerstroemia indica) occurs as branches of this thin-barked shrub merge and grow together. The branches are almost rigid, but the points of intersection ("crosslinks") can be either weak (b) or relatively strong (c). (Courtesy of Bernard Hallet, Quaternary Research Center, University of Washington, Seattle, WA 98105.)...

L-alaninol (24). Decinine (2) was isolated by Ferris from Decodon verti-cillatus (2, 17), from Lagerstroemia indica L. (25), and from Lythrum lan-ceolatum (9). This alkaloid was shown to be identical to the dihydro derivative of lythrine (22). 

Decamine (18) was isolated by Ferris from D. verticillatus (2) and from Lagerstroemia indica by Ferris et al. (25). Ferris established the identity of decamine with dihydrovertine. 

Verticillatine (20) was isolated by Ferris from Decodon verticillatus (2). Dihydroverticillatine (21) and lagerstroemine (23) were isolated by Ferris et al. from Lagerstroemia indica (25) and sinicuichine (22) by Blomster et al. from H. salicifolia (1). Lagerstroemine was also detected in Plantago psylium... 

Lagerine was isolated by Ferris et al. from Lagerstroemia indica (17), and methyllagerine was isolated by Hanaoka et al. (42) from L. indica grown in Japan. The structure of lagerine is unique since it was not possible to convert this base to any known Lythraceae alkaloid. The basic skeletons of O-methyllagerine and vertaline are the same since the mass spectra of the two alkaloids are almost identical. The alkaloids differ in the substitution pattern on the biphenyl ether chromophore, a fact which is reflected in the UV spectra. 

We use the name demethyllasubine-I and -II for quinolizidols 64a and 65b. b a, Heimia salicifoiia Link and Otto b, Lagerstroemia subcostata Koehne. 

Fuji et al. (16) have recently isolated lasubine-I (64b) and lasubine-II (63b) from Lagerstroemia subcostata Koehne. The structures of these alkaloids have been established by correlation with synthetic compounds (63a and 64a) as well as by analysis of IR, PMR, 13C-NMR, and mass spectra. These alkaloids are listed in Table IV (16, 47, 48, 50, 51). 

Two minor ester alkaloids, subcosine-I (69) and subcodine-II (67), have been isolated recently by Fuji et al. (16) from Lagerstroemia subcostata. 

Koordersiodendron pinnatum (Blanco) Merr./— Lagerstroemia speciosa (Linn.) Pers./—... 

Lagerstroemia subcostata Koehne/Subcostata crape myrtle 73 37 17 27 18 7 4 1.5 1.4... 

Lagerine, a biphenyl ether alkaloid of Lagerstroemia indica, was assigned structure... 

Myrtales Lythraceae, Myrtaceae Lythrum, Lagerstroemia, Punica Lythrum salicaria, interzonal others intrazonal centrifugal stamens Sattler, 1972b Mayr, 1969... 

Labourdonnaisia, 232 Lacandonia, 100, 147 Laccospadix, 162 Lactoris, 109 Lafoensia, 232 Lagerstroemia, 147 Larix, 24 europaea, 23 laricina, 23 microcarpa, 23 occidentalis, 23 Latania, 160... 

Judy WV, Hari SP, Stogsdill WW, Judy JS, Naguib YMA, Passwater R (2003) Antidiabetic activity of a standardized extract (Glucosol) from Lagerstroemia speciosa, leaves in Type II diabetics. A dose-dependence study. J Ethanopharmcol 87 115-117... 

Constit. of Lagerstroemia parviflora. Needles (C6H5/pet. ether). Mp 346-348°. 

Isol. from leaf tannin of Lagerstroemia subcostata. [a] -1-40.8° (c, 1 in HjO). Exact struct, unknown. 

Hayashi, T., Maruyama, H., Kasai, R. et al. (2002). Ellagitannins from Lagerstroemia speciosa as activators of glucose transport in fat cells. Planta Medica, 68, 173-175. 

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