Abstract: An inner fender includes a cover surface, a left projecting portion, and a right projecting portion. Under a condition that a body frame is in an upright state and that a left front wheel and a right front wheel are not turned, the left projecting portion projects forward from the cover surface behind a rear edge of the left front wheel; the right projecting portion projects forward from the cover surface behind a rear edge of the right front wheel; and a portion of the cover surface between the left projecting portion and the right projecting portion faces a space defined between the left front wheel and the right front wheel.

Abstract: A left front fender includes a left upper wall portion, a left side wall portion, and a left guide portion. The left upper wall portion defines a left upper inner surface facing a portion of an upper surface of a left front wheel. The left side wall portion extends downward from the left upper inner surface to define a left side inner surface facing a left side surface of the left front wheel. The left guide portion defines a left guide surface extending rightward from the left side inner surface toward the left side surface of the left front wheel.

Abstract: A right front fender and a left front fender are displaceable relative to a vehicle body frame in accordance with an operation of a link mechanism. At least a portion of the right front fender is disposed above a center in the up-down direction of the vehicle body frame between an upper end of a right front wheel and a lower edge of the link mechanism or a steering mechanism directly above the right front wheel, as seen from a front in the front-rear direction of the vehicle body frame when the vehicle body frame is in the upright state. At least a portion of the left front fender is disposed above a center in the up-down direction of the vehicle body frame between an upper end of a left front wheel and a lower edge of the link mechanism or the steering mechanism directly above the left front wheel, as seen from the front in the front-rear direction of the vehicle body frame when the vehicle body frame is in the upright state.

Abstract: A left front fender includes a left upper wall portion, a left side wall portion, and a left guide portion. The left upper wall portion defines a left upper inner surface facing a portion of an upper surface of a left front wheel. The left side wall portion extends downward from the left upper inner surface to define a left side inner surface facing a left side surface of the left front wheel. The left guide portion defines a left guide surface extending rightward from the left side inner surface toward the left side surface of the left front wheel.

Abstract: An inner fender includes a cover face surface, a left projecting portion, and a right projecting portion. Under a condition that a body frame is in an upright state and that a left front wheel and a right front wheel are not turned, the left projecting portion projects forward from the cover face surface behind a rear edge of the left front wheel; the right projecting portion projects forward from the cover face surface behind a rear edge of the right front wheel; and a portion of the cover face surface between the left projecting portion and the right projecting portion faces a space defined between the left front wheel and the right front wheel.

Abstract: A right front fender and a left front fender are displaceable relative to a vehicle body frame in accordance with an operation of a link mechanism. At least a portion of the right front fender is disposed above a center in the up-down direction between an upper end of a right front wheel and a lower edge of the link mechanism or a steering mechanism directly above the right front wheel, and is disposed below a right lower edge of a front portion of a link cover portion, as seen from a front in the front-rear direction of the vehicle body frame when the vehicle body frame is in the upright state. At least a portion of the left front fender is disposed above a center in the up-down direction between an upper end of a left front wheel and a lower edge of the link mechanism or the steering mechanism directly above the left front wheel, and is disposed below the left lower edge of the front portion of the link cover portion, as seen from the front when the vehicle body frame is in the upright state.

Abstract: A right front fender and a left front fender are displaceable relative to a vehicle body frame in accordance with an operation of a link mechanism. At least a portion of the right front fender is disposed above a center in the up-down direction of the vehicle body frame between an upper end of a right front wheel and a lower edge of the link mechanism or a steering mechanism directly above the right front wheel, as seen from a front in the front-rear direction of the vehicle body frame when the vehicle body frame is in the upright state. At least a portion of the left front fender is disposed above a center in the up-down direction of the vehicle body frame between an upper end of a left front wheel and a lower edge of the link mechanism or the steering mechanism directly above the left front wheel, as seen from the front in the front-rear direction of the vehicle body frame when the vehicle body frame is in the upright state.

Abstract: A right front fender and a left front fender are displaceable relative to a vehicle body frame in accordance with an operation of a link mechanism. At least a portion of the right front fender is disposed above a center in the up-down direction between an upper end of a right front wheel and a lower edge of the link mechanism or a steering mechanism directly above the right front wheel, and is disposed below a right lower edge of a front portion of a link cover portion, as seen from a front in the front-rear direction of the vehicle body frame when the vehicle body frame is in the upright state. At least a portion of the left front fender is disposed above a center in the up-down direction between an upper end of a left front wheel and a lower edge of the link mechanism or the steering mechanism directly above the left front wheel, and is disposed below the left lower edge of the front portion of the link cover portion, as seen from the front when the vehicle body frame is in the upright state.

Abstract: The present invention provides a pharmaceutical composition which is useful as a phosphatidylinositol 3 kinase (PI3K) inhibitor and an antitumor agent, and it provides a novel bicyclic or tricyclic fused heteroaryl derivative or a salt thereof which possesses an excellent PI3K inhibiting activity and cancer cell growth inhibiting activity.

Abstract: The present invention provides a pharmaceutical composition which is useful as a phosphatidylinositol 3 kinase (PI3K) inhibitor and an antitumor agent, and it provides a novel bicyclic or tricyclic fused heteroaryl derivative or a salt thereof which possesses an excellent PI3K inhibiting activity and cancer cell growth inhibiting activity.

Abstract: The present invention provides a pharmaceutical composition which is useful as a phosphatidylinositol 3 kinase (PI3K) inhibitor and an antitumor agent, and it provides a novel bicyclic or tricyclic fused heteroaryl derivative or a salt thereof which possesses an excellent PI3K inhibiting activity and cancer cell growth inhibiting activity.

Abstract: The present invention provides a pharmaceutical composition which is useful as a phosphatidylinositol 3 kinase (PI3K) inhibitor and an antitumor agent, and it provides a novel bicyclic or tricyclic fused heteroaryl derivative or a salt thereof which possesses an excellent PI3K inhibiting activity and cancer cell growth inhibiting activity.

Abstract: The present invention provides a pharmaceutical composition which is useful as a phosphatidylinositol 3 kinase (PI3K) inhibitor and an antitumor agent, and it provides a novel bicyclic or tricyclic fused heteroaryl derivative or a salt thereof which possesses an excellent PI3K inhibiting activity and cancer cell growth inhibiting activity.

Abstract: The present invention provides a pharmaceutical composition which is useful as a phosphatidylinositol 3 kinase (PI3K) inhibitor and an antitumor agent, and it provides a novel bicyclic or tricyclic fused heteroaryl derivative or a salt thereof which possesses an excellent PI3K inhibiting activity and cancer cell growth inhibiting activity.

Abstract: The present invention provides a pharmaceutical composition which is useful as a phosphatidylinositol 3 kinase (PI3K) inhibitor and an antitumor agent, and it provides a novel bicyclic or tricyclic fused heteroaryl derivative or a salt thereof which possesses an excellent PI3K inhibiting activity and cancer cell growth inhibiting activity.

Abstract: The present invention provides a pharmaceutical composition which is useful as a phosphatidylinositol 3 kinase (PI3K) inhibitor and an antitumor agent, and it provides a novel bicyclic or tricyclic fused heteroaryl derivative or a salt thereof which possesses an excellent PI3K inhibiting activity and cancer cell growth inhibiting activity.

Abstract: The present invention provides a pharmaceutical composition which is useful as a phosphatidylinositol 3 kinase (PI3K) inhibitor and an antitumor agent, and it provides a novel bicyclic or tricyclic fused heteroaryl derivative or a salt thereof which possesses an excellent PI3K inhibiting activity and cancer cell growth inhibiting activity.

Abstract: The present invention provides a pharmaceutical composition which is useful as a phosphatidylinositol 3 kinase (PI3K) inhibitor and an antitumor agent, and it provides a novel bicyclic or tricyclic fused heteroaryl derivative or a salt thereof which possesses an excellent PI3K inhibiting activity and cancer cell growth inhibiting activity.